Amplifier

Circuit adjustable bass filter from 50 Hz to 150 Hz NE5532

Circuit adjustable bass filter from 50 Hz to 150 Hz NE5532

This is a bass filter, using the OpAmp Ne5532 or another of your choice. The circuit is simple to set up and already has symmetrical … Read more

Power amplifier TDA7297 3D board

Stereo Power audio amplifier with TDA7297 – 2 x 15 Watts

complete stereo amplifier circuit including printed circuit board to power of 2 X 15 Watts. Using minimum of components in the integrated circuit TDa7297 ST … Read more

stereo audio amplifier lm386 PCB 3D board

Simple Circuit – Stereo audio amplifier with IC LM386

This is an audio amplifier with 2 LM386 integrated circuits. Basically it deals with the use of 2 amplifiers as in another article posted at … Read more

Power Amplifier with Subwoofer – TDA2030 and Ne5532 – 2 x 18 Watts + 30 W Bass

Power Amplifier with Subwoofer – TDA2030 and Ne5532 – 2 x 18 Watts + 30 W Bass

This circuit is typical of systems sold for 2.1 PC surround systems, left and right channel and subwoofer. Just plugging in the stereo audio and … Read more

Circuit power amplifier stereo audio with LM1875 – 2 x 20 watt

This is an audio amplifier circuit using integrated LM1875 stereo to 2 x 20 Watts. With power supply for ease of assembly for any hobbyist. … Read more

tda7293_audio_power_amplifier_100_watts

Audio Amplifier Mono With IC TDA7293 -100 Watts

Power amplifier using the TDA7293 chip manufactured by ST Microelectronics, includes schematic and PCB design for easy mounting of the power amplifier. The TDA7293 is … Read more

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Operational Amplifier LM324 and super microphone circuit

Afroman goes over the basics of how to use an operational amplifier to amplify tiny voltages, and builds a circuit to listen to very faint sounds with a microphone.

For more information about amplifiers, Google “inverting amplifier” “non-inverting amplifier” “instrumentation amplifier” “class A amplifier” “class B amplifier” “class AB amplifier” and that should give you a lot to chew on.

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