Wednesday, December 28, 2011

20 LED AUDIO VU METER

This circuit has 3 main sections, an inverting op-amp amplifier, a rectifier and LED display. The input can be from almost any low level source, but if not using an electret microphone, then omit R1 as it's not necessary. The gain of the amplifier based around IC1 is controlled by VR1. The output is rectified by D1,2 and filtered using C4,R6.The final stage is a standard design for the LM3914. Alter R8 to control LED brightness but be careful not to over-drive the IC's. It's recommended that you don't


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Thursday, December 22, 2011

TDA8560Q - 40W Stereo BTL Car Amplifier Circuit

Approached scheme is simple, few external electronic components, is suitable for construction of car audio. Output power is 2 - 4 Ohm to 2 x 30 W (maximum 2 x 40 W) on two channels BTL (SETREO)

Pin Arrangement and functziile met. Circuit pins are placed on two rows. Bridge amplifier working so not linked to car speakers table! The integrated circuit can charge up to 8.4 A in pregnancy. Does the scurcircuit protectzie blocking the exit at high temperature (above 150 degrees Celsius). MUTE and STANDBY functzii has enabled the pin 11.

TDA8560Q Stereo BTL car  Amplifier Circuit 40W Stereo BTL Car
Amplifier Circuit using IC TDA8560Q

IC TDA8560Q Pin OutIC TDA8560Q Pin Out

The TDA8560Q is an integrated class-B output amplifier in a 13-lead single-in-line power package. It contains 2 ´ 40 W/2 W amplifiers in BTL configuration. The device is primarily developed for car radio applications. The TDA8560Q contains two identical amplifiers and can be used for bridge applications. The gain of each amplifier is fixed at 40 dB. Special features of the device are as follows.
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45 watt Amplifier kelas B

45 Watt Class B amplifier Circuit of this very simple , straightforward but Rugged circuit, though intended for any high quality audio applications and, above all, to complete the series of articles recently started forming the Modular Preamplifier Control Center, is well suited Also to make a very Good Guitar or Bass amplifier

rangkaian 45 watt amplifier  kelas BSkema rangkaian 45 watt amplifier kelas B

Note
  • Power transistors Q8 and Q9 Can be Used satisfactorily: 2N3055/MJ2955, TIP3055/TIP2955, TIP35/TIP36, MJ802/MJ4502 amongst others.
  • Power transistors Q8 and Q9 Should be mounted on a black, finned heatsinks as usual.
Technical data:
  • Output power (1KHz sinewave): 45 Watt RMS into 8 Ohms - 69W RMS into 4 Ohms
  • Sensitivity: 0.81V RMS input for 45W output
  • Frequency response @ 1W RMS: 15Hz to 23KHz -0.2dB
  • Total harmonic distortion @ 1KHz: 1W 0.008% 20W 0.008% 45W 0.016%
  • Total harmonic distortion @10KHz: 1W 0.01% 20W 0.015% 45W 0.025%
  • Unconditionally stable on capacitive loads
List Component
  • R1: 18K
  • R2: 3K9
  • R3,R6: 1K
  • R4: 2K2
  • R5: 15K
  • R7: 22K
  • R8: 330R
  • R9,R10: 10R
  • R11,R12: 47R
  • R13: 10R/1 Watt
  • C1: 1µF/63V
  • C2: 470pF/63V
  • C3: 47µF/25V
  • C4: 15pF/63V
  • C6: 220nF/100V
  • C6: 100nF/63V
  • D1,D2,D3,D4: 1N4148
  • Q1,Q2: BC560C
  • Q3,Q4: BC556
  • Q5: BC546
  • Q6: BD139
  • Q7: BD140
  • Q8: 2N3055
  • Q9: MJ2955
source
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TA8210AH - 2 x 22W BTL Car Amplifier Circuit

This is a circuit of 2 x 22 watt BTL amplifier using IC TA8210AH. It is not only an auto amplifier, ideal for a low-frequency auditory approach those hi-fi, with a very good linear feature. Can be fueled by a 12 volt car battery but shi from a 12 volt charger. The chip incorporates four bridge amplifiers available in two by two in order to ensure the output 22 watts per channel on 4 ohms.
TA8210AH - 2 x 22W BTL Car Power Amplifier CircuitTA8210AH - 2 x 22W BTL Car Power Amplifier Circuit

Note:
  • IC TA8210AH must be connected to a heat sink. A computer cabinet fan can also be used in addition.
  • The circuit roughly draws 6A current at 18 V at full volume.So the power supply must be any thing more than 6A.
Absolute Maximum Ratings of IC TA8210AH
  • Peak supply voltage (0.2s): 50 V
  • supply voltage VCC (DC): 25 V
  • Operating supply voltage VCC (opr): 18 V
  • Output current (peak): 9 A
  • Power dissipation PD: 50 W
  • Operating temperature: 30~85 °C
  • Storage temperature: 55~150 °C
List Componet
C1,C2           : 4,7uF/35V
C3,C7 : 47uF/35V
C4 : 220uF/35
C5,C6 : 1nF
C8,C10,C11,C12 : 0,1uF/35V
C9 : 2200uf/35V
IC : TA8210AH/AL
HL1 : LED
R1 : 2 k
R2,R2,R3,R4,R5 : 2,2 Ohm
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Wednesday, December 21, 2011

TDA7375 Car Audio Amplifier Circuit

The following circuit shows about 35W quadruple amplifier and 2 x 25W bridge amplifier based on the TDA7375 IC, this circuit requests the minimum of external components. Although the first conception went to car applications , to give him/it in a great variety of applications of low potency. That integrated circuit is ideal in the situation in that is wanted a reasonable potency and with a Power tension relatively low for your operation. That circuit drawn below it uses the basic configuration of quadruple amplifier, but using a configuration in bridge, it can be obtained about 4 times the maximum potency. In that configuration of quadruple amplifier it can be used as amplifier end of systems surround

TDA7375 2 x 25W Bridge Amplifier CircuitTDA7375 2 x 25W Bridge Amplifier Circuit

TDA7375 35W quadruple Amplifier CircuitTDA7375 35W quadruple Audio Amplifier Circuit

IC TDA7375 is a new technology class AB car amplifier able to work either in dual bridge or quad single ended configuration. The exclusive fully complementary structure of the output stage and the internally fixed gain guaranteesthe highest possible power performances with extremely reduced component count. The on-board clip detector simplifies gain compression operation. The fault diagnostics makes it possible to detect mistakes during car radio set assembly and wiring in the car.

Absolute Maximum Ratings Of IC TDA7375
  • Operating Supply Voltage: 18 V
  • DC Supply Voltage: 28 V
  • Peak Supply Voltage (for t = 50ms): 50 V
  • Output Peak Current (not repetitive t = 100ms): 4.5 A
  • Output Peak Current (repetitive f > 10Hz): 3.5 A
  • Power Dissipation (Tcase= 85°C): 36 W
  • Storage and Junction Temperature : -40 to 150 °C
read more "TDA7375 Car Audio Amplifier Circuit"

Sunday, December 18, 2011

Dynamic Microphone Preamplifier Dengan Gain Control

This is a 3 stage discrete Microphone amplifier circuit with gain control.The first stage built around Q1 operates in common base configuration. This is unusable in audio stages, but in this case, it allows Q1 to operate at low noise levels and improves overall signal to noise ratio. Q2 and Q3 form a direct coupled amplifier.

 rangkaian dynamic microphone preamplifier Skema rangkaian dynamic microphone preamplifier

As the signal from a dynamic microphone is low typically much less than 10mV, then there is little to be gained by setting the collector voltage voltage of Q1 to half the supply voltage. In power amplifiers, biasing to half the supply voltage allows for maximum voltage swing, and highest overload margin, but where input levels are low, any value in the linear part of the operating characteristics will suffice. Here Q1 operates with a collector voltage of 2.4V and a low collector current of around 200uA. This low collector current ensures low noise performance and also raises the input impedance of the stage to around 400 ohms. This is a good match for any dynamic microphone having an impedance's between 200 and 600 ohms.

Source

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150 Watt OCL Power Amplifier

This power amplifier OCL circuit deliver a blasting 150 watts to a 4 Ohm speaker jengkol use of transistors 2N3055 and MJ2955. The amplifier circuit is very CHEAPEST and Can be powered from 24 to 32 V/5A dual power supply. You must try this circuit. Its working great. Because Transisitor on the final amplifier will of some very hot then add the aluminum finned cooler and the fan so That the transistor is not too high temperatures

rangkaian 150 watt OCL power amplifier
Skema rangkaian 150 watt OCL power amplifier

Note:
  • Use 24V/5A dual power supply.
  • Connect a 50K POT in series with the input as volume control if you need.Not shown in circuit diagram
maximum rating Transistor 2N3055 NPN and MJ2955 PNP
  • Collector-Base Voltage : 100 V
  • Collector-Emitter Voltage: 70 V
  • Collector-Emitter Voltage: 60 V
  • VEBO Emitter-Base Voltage: 7 V
  • IC Collector Current: 15 A
  • IB Base Current: 7 A
  • Total Dissipation: 115 W
  • Storage Temperature: -65 to 200 oC
  • Tj Max. Operating Junction Temperature 200 oC
Source: elektroarea.blogspot.com
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Op-Amp (LM741) Mic Preamplifier

Rangkaian op-Amp mic preamplifier

This Circuit of microphone preamplifier has a high quality and using a single power supply, suitable for dynamic or electret microphones. The op-amps Used Can be any low noise, high performance type, eg LM471, NE5534, TL071, OPA 371 etc.

rangkaian op-Amp  mic preamplifier Skema rangkaian op-Amp mic preamplifier

The design is a non-inverting amplifiers design, the input is applied to the non-inverting input of the op-amp pin 3 Which is in most cases. The input impedance is 23.5k, the overall voltage gain is determined by R2 and R1 and with the values of R2 and R1 on the circuit diagram the voltage gain (for mid band, 1KHz) is approximately 27.2dB.

Op-amp feature high gain bandwidth products, have a fast slewing rate and have extremely low noise. It is difficult to achieve the same performance using discrete components. Finally the overall signal to noise ratio has been calculated, the source was a 1k impedance microphone generating a 1mV pk-pk sine wave. An impressive result of 110dB S/n at 1KHz is achieved. In practice this figure will be lower and determined by the quality of the microphone used.
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Rangkaian 2 watt Amplifier BD139/140

This amplifier operates in Class AB mode with up to 2 watts of output power, the single 470R preset resistor controls the quiescent current PR1 flowing through the BD139/140 complimentary output transistors. Adjustment here, is a trade-off Between low distortion and low quiescent current. Typically, under quiescent conditions, current is about 15 mA, rising to 150 mA with a 50 mV input signal. The frequency response is shown below and is flat from 20Hz to 100kHz

rangkaian 2 watt amplifier Skema rangkaian 2 watt amplifier

PR1 470R controls the quiescent current flowing through the BD139/140 complimentary output transistors. Adjustment here, is a trade-off between low distortion and low quiescent current. Typically, under quiescent conditions, current is about 15 mA rising to 150 mA with a 50 mV input signal. The frequency response is shown below and is flat from 20Hz to 100kHz

This amplifier circuit is DC biased so that the emitters of the BD139 and BD140 are at approximately half supply voltage, to allow for a maximum output voltage swing. R9 and R10 provide a degree of temperature stabilization which works as follows. If the output transistors are warm, the emitter currents will increase. This causes a greater voltage drop across R9 and R10 reducing the available bias current. All four transistors are direct coupled which ensures:
  • A good low frequency response
  • Temperature and bias change stability.
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Saturday, December 10, 2011

TDA7383 - Car Quad Audio Amplifier 35W Circuit

The following a 4 x 35 watts channels/quad audio power amplifier circuit based IC TDA7383. The amplifier circuit is designed specifically suitable for car audio system applications. With a fairly large output power per channel, low distortion and low output noise features. Heatsink should be installed on the power IC to avoid excessive heat. There are very simple and easy to build cos only a few additional components outside the IC power.

Circuit of  4 x 35W Car  Audio Amplifier TDA7383 Rangkaian 4 x 35W Car Audio Amplifier TDA7383

TDA7383 PinningTDA7383 Pinning

IC TDA7383 is a new technology class AB Audio Power Amplifier in Flexiwatt 25 package designed for high end car radio applications. Thanks to the fully complementary PNP/NPN output configuration the TDA7383 allows a rail to rail output voltage swing with no need of bootstrap capacitors. The extremely reduced components count allows very compact sets. The on-board clipping detector simplifies gain compression operations. The fault diagnostics makes it possible to detect mistakes during Car- Radio assembly and wiring in the car.

Absolute Maximum Ratings of IC TDA7383
Operating Supply Voltage                                   : 18 V
DC Supply Voltage : 28 V
Peak Supply Voltage (t = 50ms) : 50 V
Output Peak Current Repetitive (Duty Cycle 10% at f = 10Hz): 4.5 A
Output Peak Current Non Repetitive (t = 100µs) : 5.5 A
Power dissipation, (Tcase = 70°C) : 80 W
Junction Temperature : 150 °C
Storage Temperature : – 55 to 150 °C
read more "TDA7383 - Car Quad Audio Amplifier 35W Circuit"

TDA2052 HiFi Power Amplifier 60W Circuit

This is a circuit of 60 watt HiFi audio amplifier system using IC TDA2052 . The circuit is class AB amplifier which operates split power supply type with a maximum voltage of 25V and generates 60 Watt power output. Heatsink should be installed on the power IC to avoid excessive heat.

Rangkaian 60W HiFi Power Amplifier TDA2052Rangkaian 60W HiFi Power Amplifier TDA2052

TDA2052 Pinout
TDA2052 IC Pinning

The TDA2052 is a monolithic integrated circuit in Heptawatt package, intended for use as audio class AB amplifier in TV or Hi-Fi field application. Thanks to the wide voltage range and to the high out current capability it’s able to supply the highest power into both 4/8 loads even in presence of poor supply regulation. The built in Muting/Stand-by function simplifies the remote operations avoiding also switching on-off noises

Absolute Maximum Ratings of IC TDA2052
DC Supply Voltage                         :  ±25 V
Output Peak Current (internally limited) : 6 A
Power Dissipation : 70°C 30W
Operating Temperature Range : +70 °C
Storage and Junction Temperature : -40 to +150 °C
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4 x 25 W Car Amplifier TDA7381 Circuit

This is a 4 x25 Watt audio amplifier circuit using IC TDA7381. The amplifier circuit require few external components and is very easy to build. This amplifier is designed for car audio system, but you may use the circuit for another application such as mp3 player, computer etc

4 Rangkaian 4 x 25 W Car audio Amplifier
Using TDA7381

TDA7381 IC PinningTDA7381 IC Pinning

Note:
  • The TDA7295 IC must be fitted with adequately sized heat sinks.
  • Use 12V DC for powering the circuit.
  • Connect a 50K POT in series with the input as volume control if you need. Not shown in circuit diagram.
The TDA7381 is a class AB audio power amplifier in Flexiwatt25 package designed for car radio applications. You you can also use this circuit for other purposes. Thanks to the fully complementary PNP/NPN output configuration the TDA7381 allows a rail to rail output voltage swing with no need of bootstrap capacitors.

The extremely reduced components count allows very compact sets. The on-board clipping detector simplifies gain compression operations. The fault diagnostics makes it possible to detect mistakes during Car- Radio assembly and wiring in the car.

Absolute maximum ratings of IC TDA7295 IC
  1. Operating supply voltage = 18 V
  2. DC supply voltage = 28 V
  3. Peak supply voltage (t = 50 ms) = 50 V
  4. Output peak current Repetitive (duty cycle 10 % at f = 10 Hz) = 3 A
  5. Output peak current Non repetitive (t = 100 μs) = 4A
  6. Power dissipation, (Tcase = 70 °C) = 80 W
  7. Junction temperature = 150 °C
  8. Storage temperature = -40 to 150 °C
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Rangkaian Audio Amplifier TDA7295 - 80W

The following a circuit of 80W audio amplifier is using by IC TDA7295. The circuit very simple and will be easy to build. TDA7295 has many features to support your audio system, the most important is that the IC has wide voltage range, very low distortion and very low noise feature.
Rangkaian Audio Amplifier TDA7295Rangkaian Audio Amplifier TDA7295 - 80W

TDA7295 PinningTDA7295 IC Pinning

Note:
  • The TDA7295 IC must be fitted with adequately sized heat sinks.
  • Power supply voltage should not exceed 40V
  • Connect a 50K POT in series with the input as volume control if you need. Not shown in circuit diagram.

The TDA7295 is a monolithic integrated circuit in Multiwatt 15 package, intended for use as audio class AB amplifier in Hi-Fi field applications (Home Stereo, self powered loudspeakers, Topclass TV). Thanks to the wide voltage range and to the high out current capability it is able to supply the highest power into both 4Ω and 8Ω loads even in presence of poor supply regulation, with high Supply Voltage Rejection. The built in muting function with turn on delay simplifies the remote operation avoiding switching on-off noises.
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DA1553CQ - Car Audio Amplifier 2 x 22 Watt Circuit

This is a 22 Watt car stereo audio amplifier. The circuit is based by a single IC TDA1553 with some external components, this IC will handle your stereo car audio system. The IC TDA1553CQ contains 2×22 W amplifiers with differential input stages and can be used for bridge applications.. The gain of each amplifier is fixed at 26 dB. The device is primarily developed for car radio applications.
Circuit of  DA1553CQ Car Audio  Amplifier
Circuit of 2 x 22W-BTL Car Audio Amplifier
Using DA1553CQ

 DA1553CQ PinOut DA1553CQ IC Pinning

Note:
  • The DA1553CQ IC must be fitted with adequately sized heat sinks.
  • Connect a 10K POT in series with the input as volume control if you need. Not shown in circuit diagram.
  • Use 12V DC for powering the circuit.

When a short-circuit to ground occurs, which forces a DC voltage across the loudspeaker of >= V, a built-in protection circuit becomes active and limits the DC voltage across the loudspeaker to <= V. Pin 12 detects the status of the protection circuit (e.g. for diagnostic purposes).

If any output is short-circuited to ground during the standby mode, it becomes impossible to switch the circuit to the mute or operating condition. In this event the supply current will be limited to a few milliamps.
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STA550 - 2 x 70W Audio Amplifier Circuit

This is a 2 x 70W audio power amplifier circuit which built using single IC STA550. The amplifier circuit require few external components (most of them are resistors and capacitors) and is very easy to design The STA550 audio amplifier is capable to provide a maximum output power of 70 watts on two channels (70 + 70 watts).
STA550 -  2 x 70W  Audio Amplifier CircuitSTA550 - 2 x 70W Audio Amplifier Circuit

STA550 IC Pinout STA550 Pinout

This power amplifier circuit require a multi voltage power supply , because the amplifier require : +Vs Positive supply voltage referred to pin 13 (GND), Negative supply voltage referred to pin 13 (GND) -Vs, VCD+ Positive supply voltage tracking rail, VCD- Negative supply voltage tracking rail . The +Vs Positive supply voltage can be : +20 to +30 volts, -Vs Negative supply voltage : -10 to -22 volts , Positive supply voltage tracking rail VCD+ : +3 to 17 volts , Negative supply voltage tracking rail VCD- : -17 to -3 volts . VCD- must not be more negative than -Vs and VCD+ must not be more positive than +VS .

In this circuit diagram, R1/R3 (or R2/R4) ratio fix the gain of the preamplifier. If the input signal is very low, is possible to increase the gain fixing the product Vin*G = cost. In that case is possible to increase G decreasing R1,2 from 10KW until 2KW without relevant effetcs on the circuit behavior and remaining in the operating range Iin_max = Vin_max/R1(2) <1ma.>This is a 2 x 70W audio power amplifier circuit which built using single IC STA550.

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TDA1013B - 4W Audio Amplifier Circuit

The following a circuit of 4 watt audio amplifier. The amplifier is using on integrated audio amplifier chip, TDA1013B which is able to gained the audio power output up to 4W at 8 ohm loads. The wide supply voltage range makes this amplifier circuit ideal for applications in mains and battery-fed apparatus such as television receivers and record players.
TDA1013B - 4W Audio Amplifier CircuitRangkaian Audio Amplifier 4W TDA1013B
Note:
  • The TDA1013B IC must be fitted with adequately sized heat sinks.
  • Connect a 10K POT in series with the input as volume control if you need.Not shown in circuit diagram.
  • Use 9-18V DC for powering the circuit.
  • This amplifier circuit can be used in a variety of applications such as car audio systems, home theater systems, personal audio systems, public address systems etc.
The DC volume control stage has a logarithmic control characteristic with a range of more than 80 dB; control is by means of a DC voltage variable between 2 and 6.5 V. The audio amplifier has a well defined open loop gain and a fixed integrated closed loop. This device requires only a few external components and offers stability and performance.
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Friday, December 9, 2011

TK4036II - 50W Stereo Power Amplifier Circuit

Rangkaian Amplifier TK4036II

This is a 50 Watt Audio power amplifier circuit based single IC STK4036II. Use heatsink to prevent overheating on the IC. The amplifier circuit will give you good quality of sound unexpensive and have low price. It is easy we make a power amplifier using only few external components. The STK4036II amplifier are will find in enough eponymous stereo amplifiers , but also in enough activety loudspeakers.
TK4036II -  50W  Stereo  Power Amplifier CircuitRangkaian STK4036II - 50W Stereo Power Amplifier

STK4036II Power Amplifier circuit features:
  • Compact package for thin-type audio sets
  • Member of pin-compatible series with outputs of 20 to 200W
  • Easy heatsink design to disperse heat generated in thintype stereo sets
  • Constant-current circuit to reduce supply switch-on and switch-off shock noise
  • External supply switch-on and switch-off shock noise muting, load short-circuit protection, thermal shutdown and other circuits can be tailor-designed.
read more "TK4036II - 50W Stereo Power Amplifier Circuit"

Rangkaian TDA1524 Stereo Tone Control

Here is a stereo preamplifier circuit with built in tone control facility. A very useful circuit using versatile tone control IC TDA 1524 from Phillips.
Rangkaian TDA1524 Stereo Tone ControlRangkaian TDA1524 Stereo Tone Control

This circuit is designed as per the data sheet as an effective stereo-tone & volume control for car stereos , TV sets or any sort of stereo amplifier circuit you want.The circuit includes provisions like bass control, treble control , volume control with inbuilt contour or linear mode option (can be switched in betwwen) and balance. All these functions provided can be controlled by DC voltages or by linear potentiometers.

Note:
  • R1 ,R2 ,R3 andR4 can be used for controlling volume, balance, treble and bass respectively.
  • If SPDT switch S1 is in position 1 ,the circuit works in contour mode and in position 2 the circuit works in linear mode.
  • If you are using a 15-20V supply, you can use that as your pre-amp supply as well. Make sure you test the voltage first in all cases

TDA1524 Tone Control Component:
R1,R2                : 220R Resistor
R3,R4 : 4K7 Resistor
R5 : 2K2 Resistor
R6 : 1K Resistor

C1,C2,C7,C8,C17 : 10 uF ecap
C3,C4 : 47 nF
C5,C6 : 15 nF
C9 : 220 nF poly
C10 : 100 uF 25V
C11,C12,C13,C14,C16 : 100 nF
C15 : 1000 uF 35V
C18,C19 : 10 nF

IC1 : TDA 1524A
IC2 : LM 7812
P1 : 50k linear switch pot
P2,P3,P4 : 50k linear pot
X1,X2,X3,X4 : RCA jack
D1 : Diode 1N4004
L1 : Red LED
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TDA 7053 Stereo Audio Amplifier Circuit

Rangkaian 1W Amplifier TDA 7053

This is a 1 watt stereo audio amplifier circuit using IC TDA 7053 from Philips. It is particularly suited to battery operation, providing 1 watt per channel from only a 6V DC supply. It will operate best from 6 – 12 V DC and requires no heat-sink for normal use.
TDA 7053 Stereo Audio Amplifier CircuitRangkaian TDA 7053 Stereo Audio Amplifier

The TDA7053 Integrated Circuit does nearly all the work, so there are only a few external components. C1 and C2 provide power supply decoupling or filtering. R1 and R2 provide a DC ground reference for the input signals, and may be increased if your source requires a higher load impedance. Do not use more than 100k ohms.

Since the amplifier circuit in BTL configuration, the outputs are floating with respect to ground. Therefore NO output leads should be connected to ground. The Philips data sheet contains all the necessary information about the TDA7053.

For more details please download the datasheet at:
http://www.quasarelectronics.com/3107.htm
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KA2209 Stereo Mini Audio Amplifier Circuit

This is 2x1W mini audio amplifier circuit using IC KA2209. It will operate well from 3-12V DC and will work from a battery since the quiescent current drain is low. It requires no heat sink for normal use. The input and output are both ground referenced. Maximum output will be obtained with a 12V power supply and 8 ohm speaker, however it is particularly suitable for driving headphones from a supply as low as 3V
Rangkaian KA2209 Stereo Mini Audio AmplifierRangkaian KA2209 Stereo Mini Audio Amplifier

The mini amplifier circuit only a few external components, the IC contains most of the necessary circuitry. R1,R2 and R3,R4 are the feedback resistors. C1 provides power supply decoupling. C2 and C3 are the input coupling capacitors, which block any DC that might be present on the inputs. C4,C5 block DC in the feed back circuit from the inverting inputs, and C6,C7 are the output coupling capacitors. C8, R5 and C9,R6 act as zobel networks providing a high frequency load to maintain stability at frequencies where loud speaker inductive reactance may become excessive. The pot provides adjustable input level attenuation.

KA2209 - Audio Amplifier Circuit Component
C1,C2,C3    : 10 uF/25V  ecap
C4,C5 : 100 uF/16V ecap
C6,C7 : 470 uF/16V ecap
C8,C9 : 100 nF poly
R1,R3 : 1k Resistor
R2,R4 : 100R Resistor
R5,R6 : 4R7ohm Resistor
Pot1 : 10k dual gang log pot
IC1 : KA2209 Integrated Circuit
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Wednesday, December 7, 2011

TDA1562Q . . . 50W from a 12 V battery



The integrated output amplifier described in this article consists of little more than one integrated circuit. It is intended especially for use in motor vehicles and other batteryoperated applications. Although it appears simple and hardly worth looking at, the amplifier can produce an appreciable audio power output.

technical data
Properties
High power output through Class-H operation
Low power dissipation during reproduction of music signals
Proof against short-circuits
Protection against excessive temperatures
Standby switch
No power-on or power-off clicks
Visible error indication
Measurement results (at Ub=14.4 V)
Supply voltage 8–18 V
Sensitivity 760 mV r.m.s.
Input impedance 70 kΩ
Power output 54 W r.m.s. into 4 Ω (f=1 kHz; THD+N=1%)
Harmonic distortion (THD+N) at 1 W into 4 Ω: 0.046% (1 kHz)
0.29% (20 kHz)
at 35 W into 4 Ω: 0.12% (1 kHz)
0.7% (20 kHz)
Signal-to-noise ratio (with 1 W into 4 Ω) 88 dBA
Power bandwidth 7.5 Hz – 185 kHz (at 25 W into 4 Ω)
Quiescent current about 135 mA (‘on’)

COMPONENTS LIST
Resistors:
R1 = 1MΩ
R2 = 4kΩ7
R3 = 1kΩ
R4 = 100kΩ
Capacitors:
C1,C2 = 470nF
C3,C4 = 10μF 63V radial
C5,C6,C8 = 4700μF 25V radial
(18mm max. dia., raster 7.5 mm)
C7 = 100nF, raster 5 mm
Semiconductors:
D1 = high-efficiency-LED
IC1 = TDA1562Q (Philips)
Miscellaneous:
S1 = single-pole on/off switch
Four spade connectors, PCB mount
Heatsink for IC1 (Rth<2.5>
read more "TDA1562Q . . . 50W from a 12 V battery"

Monday, December 5, 2011

LM1877 - 2W Stereo Amplifier Circuit

Using the LM1877 chip can be designed a very simple audio amplifier circuit for small audio applications like portable devices . This audio amplifier circuit capable of delivering 2 Watt per channel continuous into 8Ω loads.
LM1877 - 2W Stereo Amplifier CircuitRangkaian Stereo Amplifier 2W (LM1877)

The LM1877 is a monolithic dual power Amplifier designed to deliver 2W/channel continuous into 8 loads. The LM1877 is designed to operate with a low number of external components, and still provide flexibility for use in stereo phonographs, tape recorders and AM-FM stereo receivers, etc. Each power Amplifier is biased from a common internal Regulator to provide high power supply rejection, and output Q point centering. The LM1877 is internally compensated for all gains greater than 10.
LM1877 Pinning
LM1877 Chip Features
  • 2W/channel
  • −65 dB ripple rejection, output referred
  • −65 dB channel separation, output referred
  • Wide supply range, 6V–24V
  • Very low cross-over distortion
  • Low audio band noise
  • AC short circuit protected
  • Internal thermal shutdown
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LM4752 - 11W Stereo Amplifier Circuit

Stereo Audio Amplifier circuit using LM4752 capable of delivering 11W per channel of continuous average output power to a 4 load, or 7W per channel into 8 using a single 24V supply
LM4752 - 11W Stereo Amplifier CircuitRangkaian Stereo Amplifier 11W (LM4752)

The LM4752 is specifically designed for single supply operation and a low external component count. The gain and bias resistors are integrated on chip, resulting in a 11W stereo Amplifier in a compact 7 pin TO220 package. High output power levels at both 20V and 24V supplies and low external component count offer high value for compact stereo and TV applications. A simple mute function CAN be implemented with the addition of a few external components.

LM4752 Pinning
LM4752 Chip Features
  • Drives 4Ω and 8Ω loads
  • Internal gain resistors (AV = 34 dB)
  • Minimum external component requirement
  • Single supply operation
  • Internal current limiting
  • Internal thermal protection
  • Compact 7-lead TO-220 package
  • Low cost-per-watt
  • Wide supply range 9V - 40V
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Sunday, December 4, 2011

TBA810 - 7 Watt Audio Amplifier Circuit

Here’s a circuit of 7 Watt audio amplifier that is very simple and very easy to build. This amplifier is built using TBA810 as the main component with the support of a few passive components. This circuit can work well, kits and components of this circuit can be found easily at an electronics store in your area.
TBA810 - 7 Watt audio amplifier CircuitRangkaian TBA810 - 7 Watt audio amplifier

IC TBA810 PinningIC TBA810 Pinning

The TBA810 chip is a class B amplifier with high efficiency and very low harmonic distortion . The input voltage range of the TBA810 is from 4 volts to 20 volts . Main features of the TBA810 circuit are : low noise , few external components required , polarity inversion protection , high supply voltage rejection ( 40dB min.) . TBA810 monolithic audio amplifier can be used in many audio applications for car radios ,other audio devices or portable applications .
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TBA820M Mini Amplifier 1.2 Watt

Here is circuit of Mini amplifier 1.2 watt will use TBA820M chip, The TBA820M chip features a very low minimum working supply voltage of 3V, low quiescent current, good ripple rejection, no crossover distortion and low power dissipation. Maximum supply voltages is 16 Volts into 16 Ohms speaker, 12Volts into 8 Ohms and 9Volts into 4 Ohms.
TBA820M Mini  Amplifier 1.2 Watt CircuitRangkaian TBA820M Mini Amplifier 1.2 Watt

TBA820M pinningTBA820M IC pinning

The work of the circuit, feed power supply 9Volt reach the circuit LED1 will stick bright tell the event works of the circuit. Which C7 will voltage filter smoothly then feed, power supply , give with IC1. At pin 6 when feed input sound signal reaches pin 3 ways s of IC1. by have C1,R1,R2 perform coupling and decrease signal sound level just rightly. The part of pin 2 of IC1 have R3 and C2 perform fix the expansion ratio and enhance the stability of tall frequency improve. From that time a signal had that to enlarged then change go out pin 5 ways s of IC1 change C4 coupling signals go to still a loudspeaker. By have R4 and C5 perform eradicate the noise goes out.
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Rangkaian Microphone Pre-amplifier 2 Transistor

This microphone amplifier circuit is very simple, consisting of two levels. with wide dynamic regions, small noise, and can with a long cable about 50 meters. The battery supply is a good compromise: in this Manner The input circuit is free from mains low frequency hum pick-up and connection to The amplifier is more for simple, of due To The absence of mains cable and power supply. Using a stereo microphone the circuit must be doubled. In this case, two separate level controls are better than a dual-ganged stereo potentiometer. Low current drawing (about 2mA) ensures a long battery life.
Microphone Pre-amplifier Rangkaian Microphone Pre-amplifier

For better results use Enclosing the circuit in a metal case is highly recommended. output circuit of this microphone can directly connect to the Aux input of your amplifier through screened cable and suitable connectors.

List Component

P1: 2K2 Potentiometer
R1,R2,R3: 100K 1/4W Resistors
R4: 8K2 1/4W Resistor
R5: 68R 1/4W Resistor
R6: 6K8 1/4W Resistor
R7,R8: 1K 1/4W Resistors
R9: 150R 1/4W Resistor
C1: 1uF 63V Polyester Capacitor
C2,C3,C4: 100uF 25V Electrolytic Capacitors
C5: 22΅F 25V Electrolytic Capacitor
Q1: BC560C 45V 100mA PNP Transistor
Q2: BC550C 45V 100mA NPN Transistor

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Rangkaian Pengatur Volume Digital

Pengatur Volume Digital

Volume control is usually used Potensimeter. One drawback of the potentiometer is generated considerable noise, besides potentiometers also wear faster. To fix you can try using the following circuit. The circuit serves to replace your manual volume control in an amplifier. To adjust the volume size, you only need to press the Up or Down button. Following his schematics.

Rangkaian Pengatur Volume DigitalRangkaian Pengatur Volume Digital
Note:
  1. U1 you can get at Dallas Semiconductor.
  2. S1 to raise the volume, S2 to lower the volume.
  3. Input signal can not be less than -0.2 V.
This circuit can be used as a volume control, tone, contrast, brightness, and dimmer control. The circuit is extremely simple and compact requiring very Few external components with power supply Can Vary from 4.5V to 8V.


IC DS1669 Pinning


Pin Description IC DS1669
  • RH - High Terminal of Potentiometer
  • RW - Wiper Terminal of Potentiometer
  • RL - Low Terminal of Potentiometer
  • -V, +V - Voltage Inputs
  • UC - Up Contact Input
  • D - Digital Input
  • DC - Down Contact Input

Standard resistance values IC DS1669
  • DS1669-10 ~ 10 kΩ
  • DS1669-50 ~ 50 kΩ
  • DS1669-100 ~ 100 kΩ
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TDA7560 - 4×55 Watts Amplifier Circuit

This is a 4×55 watt audio amplifier circuit designed by the popular quad bridge amplifier TDA7560. With a 14.4V supply the amplifier circuit will produce a power output of 4 x 55W on 2 Ohm load. The circuit is activated when the ST-By and MUTE pins are both connected the Vcc. The maximum supply voltage is 18V.
Rangkaian Amplifier TDA7560 - 4×55 Watts Rangkaian Amplifier TDA7560 - 4×55 Watts

TDA7560 chip PinningTDA7560 is a 4 x 50 watt quad bridge car audio amplifier. The inputs are compatible with TDA7560 soil and can tolerate very high input signals (± 8Vpk) without sacrificing performance. If Hz are included as standard input capacitors (0.1mF), reducing the low frequency cut-off will amount to 16 Hz.

The TDA7560 is developing a breakthrough BCD (Bipolar / CMOS / AMG) Class AB Audio Power Technology Amplifierin Flexiwatt 25 packs for high-power radios. The structure P-Channel/N-Channel fully complementary output allows the bar-rail output voltage swing which, combined with high saturation minimize the loss of production and the new power references in the field of automotive – radio without distorting the historical results.
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