Mini Class A Audio Amplifier
The philosophy behind this minimalist design has been explained by Flavio Dellepiane on his highly interesting site 1. I have myself written an article about th...
807 and 1625 Valves as power amplifiers
Vacuum Tubes 807 and 1625 are commonly used by hams as power amplifiers. Both tubes are audio power amplifier beam tetrodes in the output stage of high power am...
Line-level preamplifier
Since the volume control is after the gain stage, the preamp can be easily overloaded. I tried to limit the input signal by mounting a 470 k resistor in series ...
60W audio amplifier (2N3055)
This is a simple and low cost 60W power amplifier. The optimal supply voltage is around 50V, but this amp can work from 30 to 60V. The maximum input voltage is ...
1Watt audio amplifier
Here is a simple audio amplifier circuit that is easy to build and has few components. This circuit is built around the LM386 (click for datasheet) audio amplif...
2 x 12 W HI-FI AUDIO AMPLIFIER
The TDA2616 is a hi-fi stereo amplifier designed for mains fed applications, such as stereo radio and TV. The circuit is optimally designed for symmetrical powe...
60 watt audio amplifier
Using the STK4038X audio amplifier IC, can be designed a very simple high power and efficiency audio power amplifier . This circuit is manufactured by Sanyo Cor...
2x50 watt stereo amplifier
This electronic project stereo amp is based on the STK415-090-E class H audio power amplifier hybrid IC that features a built-in power supply switching circuit....
40W/8ohms Audio Amplifier
Using the TB2922HQ audio power IC can be designed a very simple and high efficiency power audio amplifier electronic project . TB2922HQ is 2ch BTL audio amplifi...
Fet Buffer for amplifiers
The EDFET drives like a FET, but with the bias stability of bipolar. Amps of output current can be controlled by milliamps of input current. The current gain is...
USB Microphone Line Level Preamp
The computer needs at least 180 millivolts peak-to-peak and the condenser microphone in my headset produces about 20 millivolts peak-to-peak into a 2.2k load wi...
Photocell Amplifier
The output of the amplifier is to be measured on a digital voltmeter. Besides being able to accept 20 na to 200 micro amps and output voltages that range form 1...
60W FM Linear amplifier
The 60 Watt linear amplifier is simple all solid state circuit using power mosfet IRF840. The IRF series of power transistors are available in various voltage a...
General use Preamplifier with 2N3904
Most audio amplifier systems must have preamplifiers with many different characteristics. These include high-gain linear response for magnetic microphones, low-...
General use Preamplifier with 2N3904
Most audio amplifier systems must have preamplifiers with many different characteristics. These include high-gain linear response for magnetic microphones, low-...
Mini Audio Booster Amplifier
This small amplifier circuit is ideal for boosting small audio units....
Mini Audio Booster Amplifier
This small amplifier circuit is ideal for boosting small audio units....
600 watt audio amplifier (LM4702)
The circuit is based around LM4702 manufactured by NATIONAL semiconductors MJ11029-MJ11028 by ON semiconductors It is a high fidelity audio power amplifier. De...
200 watt Audio amplifier with STK4050
This complete high quality, low noise mono audio power amplifier is based around the Hybrid Integrated Circuit STK4050 manufactured by Sanyo. The circuit incorp...
200 watt Audio amplifier with STK4050
This complete high quality, low noise mono audio power amplifier is based around the Hybrid Integrated Circuit STK4050 manufactured by Sanyo. The circuit incorp...