…IC1 = LM358 dual op-amp single supply Mic = Electret Microphone Notes: Use R5 to adjust the gain of op-amp LM358. The LM358 has dual op-amp module, you may build…
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Tube Head Pre-amp
…guitar amp or just provide a great preamp tone. Designed/Manufactured by PAiA Electronics Download Tube Head circuit + components list and explanation in pdf file: Tube Head Pre-amp Circuit 1…
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…Amplifier 1W Stereo Headphone Amplifier based TDA2822 TDA8929T Class-D Audio Power Amplifier MOSFET Linear Amplifier 300W/50MHz 400W Power Amplifier “Safari” 140W Power Amplifier 300W OCL Power Amplifier 7W Audio Amplifier…
Tube Mic Pre-Amp
…47k resistors are again of the 1% variety. Download the schematics and circuit explanation of Tube Mic Pre-Amp circuit: Tube Mic Pre Amplifier 1 file(s) 26.25 KB Download Circuit Manual…
Simple Electronic Siren Based LM358
…When the switch is released C3 begins a slower discharge through R7 and R3 with a time constant of about 5 seconds. The op amp is set up as a…
Connection Tester
…Circuit Notes: This simple circuit uses a 741 op-amp in differential mode as a continuity tester. The voltage difference between the non-inverting and inverting inputs is amplified by the full…
Ultrasonic Motion Detector
…sound is detected by ultrasonic receiver. The signal is then amplified by IC1:A and IC1:B. IC1:A is selfbiasing via C2 & R5. The time constant of the first amplifier is…
Electronic Horn
…generator. Op-amp A2 operates as an integrator, whilst op-amp A3 runs as being a comparator. A2 and A3 together with each other perform as being a “wandering voltage generator” op-amp….
100W RMS Audio Amplifier
Here is the 100W RMS audio amplifier schematic diagram: This circuit is quite simple but will give you high quality audio output. Take a note that above diagram designed for…
HiFi Audio Pre-amp
This is a HiFi pre-amplifier circuit diagram with low noise output. Very wide range frequency from about 10Hz until up to 100Khz? will be gained by this preamplifier for maximum…