Blazer Power Amplifier Circuit

This is a  power amplifier blazer circuit provides up to 1000Watt . This interesting routes many good bass and treble alive. Importantly should choose Power supply source, which has been fairly high voltage class 70Vdc GND -70V 10A is the current low level

The transistors 2SC3858 and 2SA1494 are feature high bandwidth, excellent safe operating area, high linearity and high gain. Driver transistors are 2SC5200 and 2SA1943. All devices are rated at 230V, with the power transistors having a 150W dissipation and the drivers are 50W.

1000 watt Blazer Amplifier Circuit

This circuit describes an amplifier, power supply and tests procedures that are all inherently dangerous. Nothing described in this article should even be considered unless you are fully experienced, know exactly what you are doing, and are willing to take full 100% responsibility for what you do. There are aspects of the design that may require analysis, fault-finding and/or modification.

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Electret Microphone Preamplifier 1 Transistor

This is a simple microphone preamplifier circuit which you can use between your microphone and stereo amplifier. This circuit amplifier microphone suitable for use with normal home stereo amplifier line/CD/aux/tape inputs. This microphone preamplifier can take both dynamic and electret microphone inputs. The performance of the circuit is nothing superior but can be used with many not so serious projects.

Rangkaian Electret Microphone Preamplifier 1 Transistor

The circuit is a simple 1 transistor amplifier with amplification of about 30-40 dB. The dynamic mic input is just a simple one transistor amplifier circuit with nothing special in it. LED D1 is in the circuit to show that the circuit operates. The voltage drop caused by LED (around 1.8V for RED led) has been taten in account when designing the amplifier circuit built around Q1. Resistor R4 and capacitor C5 make a filter to filter out possible noise from battery or other power source which is used to feed this circuit. Capacitors C1, C2 and C3 are used to block the DC bias on Q1 base to flow out of microphone input to microphone.

This  Microphone Preamplifier Circuit From http://www.tkk.fi/

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Simple Preamp Mic using LM358

This is a simple audio mic pre amplifier circuit based on single IC LM358. The circuit is very simple, inexpensive and easy to built.

Rangkaian Simple Preamp Mic using LM358

LM358 Pinout

Note:

• variable resistor of R5 to adjust the gain of op-amplifier IC LM358.
• The LM358 has two op-amp module, you may build stereo audio pre-amplifier using single LM358.

Component list of simple preamp mic circuit:

R1, R3, R4 : 10K
R2         : 1K
R5         : 100K-1M Potensiometer
C1         : 0.1uF
C2         : 4.7uF/16V
IC1        : LM358 dual op-amplifier
Mic        : Electret Microphone 

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TDA1011 - 4W Audio Amplifier Circuit

This is 4 Watt Amplifier Circuit Diagram for portable radio application using TDA1011 from Philips Semiconductor.

The TDA1011 is a monolithic integrated audio amplifier circuit in a 9-lead single in-line (SIL) plastic package. The device is especially designed for portable radio and recorder applications and delivers up to 4 W in a 4 W load impedance. The device can deliver up to 6 W into 4 W at 16 V loaded supply in mains-fed applications. The maximum permissible supply voltage of 24 V makes this circuit very suitable for d.c. and a.c. apparatus, while the very low applicable supply voltage of 3,6 V permits 6 V applications. 

Skema Rangkaian TDA1011 - 4W Audio  Amplifier

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30W Class AB Amplifier Circuit With TIP3055/TIP2955

This amplifier has been simulated extensively, although I haven't built it yet. I am saving circuit this one for a time when I can spend good time building and making sure the wiring is going to be optimal. I am going to use this amp in a bi-amp situation with passive filters on the input. This will result in two amplifiers that amplify the highs and two amplifying the lows (for stereo) and thus I can achieve an effective power of 120W into each speaker.

Skema Rangkaian 30W Class AB Amplifier  With TIP3055/TIP2955

To set the above amplifier up, set R1 to max and R12 to 0. After doing this successfully, power on the amplifier. Set R1 so that the measured output offset is between 30 and 100mV. Once set, adjust R12 slowly to achieve a quiescent current of around 120mA. Keep checking the quiescent current as the amp heats up as it might change due to voltage drop changes in the output devices caused by heat. The heatsinks should be 0.6K/W or less for two amplifiers.

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Rangkaian 200W MOSFET Amplifier

Skema Rangkaian 200W MOSFET Amplifier      

A audio power amplifier circuit ideal for guitar or PA work or for use as a general-purpose subwoofer or hifi amplifier. Many people prefer Mosfets because of their legendary ruggedness. Altronics had a Mosfet amplifier module which produced 200W into a 4 Ohm load and so we decided to take a look it. It turned out to be based on the "Pro Series One" as mentioned above, although this version by Altronics has been derated and adapted to different Mosfets. It has a rated power output of 140W into 8W and 200W into 4 Ohm. Frequency response is within 1dB from 20Hz to 80kHz. Total harmonic distortion is rated at less than 0.1% up to full power and signal-to-noise ratio with respect to 200W is better than 100dB unweighted. 

This 200W MOSFET Amplifier  Circuit From http://electronics-diy.com/

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60W Power Amplifier Class B

This is a 60W power amplifier circuit based on 2N3055 transistor. The optimal supply voltage is around 50V, but this amp can work from 30 to 60V. As you can see, in this design the components have a big tolerance, so you can build it with almost any components that you can find at home. The output power transistors can be any NPN types, but do not use Darlington types.

Skema Rangkaian 60W Power Amplifier Class B

Capacitor C1 regulates the low frequencies (bass), as the capacitance grows, the low frequencies are getting louder. Capacitor C2 regulates the higher frequencies (treble), as the capacitance grows, the higher frequencies are getting quieter.

This is a class B amplifier, this means, that a current must flow through the end transistors, even if there is no signal on the input. This current can be regulated with the 500 Ohm trimmer resistor. As this current increases, the sound of the amplifier is better, but output transistors are dispatching more heat. If the current is decreased, the transistors are dispatching less heat, but the sound quality is decreased.

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