Sound & Audio Amplifier Circuit Diagrams

1 Watt Audio Amplifier. 8 Ohms impedance. 20 Hz to 20 kHz. Small, few components.
0 Comments - in Audio Amplifiers
This simple stereo audio amplifier will amplify audio for your low-medium impedance headphones and give you left/right balance control
Describes the schematic (circuit diagram) and PCB (Printed Circuit Board) for a cheap 100-150 Watt audio amplifier with few components.
This audio amplifier electronic circuit uses MOSFET transistors to create more than 25 Watts output power. Uses IRF530 and IRF9530 MOSFET transistors.
PCB plans and circuit diagram (schematic) for what appears to be an extremely nice 100 watt guitar amplifier. Includes preamplifier and power amplifier circuit diagram and PCBs

High quality 25 watt audio amplifier. Combining 2 would give a 50 watt stereo amplifier.

Variable gain audio amplifier capable of powering a small speaker for personal use
Shows an electronic circuit diagram (schematic) for a simple 10 Watt audio amplifier, using only 4 transistors.

This kit uses the TDA2009 class AB audio amplifier IC for high quality stereo applications.
0 Comments - in Audio Amplifiers
Amplifier circuit for electret microphones (condenser microphones). Amplifier the audio signals picked up by the electret microphone, using 741 op-amp and a 2N2222 transistor.

2 channel (Stereo) Audio Amplifier with 1 watt per channel.
0 Comments - in LED Circuits
Schematic for an electronic audio level VU meter that uses LED's to display the volume/audio levels.

Amplify tiny audio signals fifty times with this electronic kit, and deliver them to a power amplifier cleanly and undistorted. AGC (automatic gain control) eliminates distortion. This circuit is useful in boosting the output from tape heads, microphones

2 watts of power across to channels is what this kit delivers. Great quality.
0 Comments - in RF Amplifiers
MicroStrip 2.3 GHz (GigaHertz) RF amplifier with 1 Watt RF output power.
0 Comments - in Radio Receivers
Circuit diagram for an AM radio antenna preamplifier that amplifiers the signal before it get to the AM receiver, thus making the AM radio signals stronger for better reception.

An extremely good stereo tube amplifier which produces 90Wrms per channel.
0 Comments - in Telephone
Features a telephone ring generators, phone line in-use indicators and an audio interface circuit.

This 20 Watt FM RF Amplifier will increase the output of your FM transmitter from about 1 Watt to 20 Watts.
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