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Amplifiers

A Push-Pull Amplifier Sound Scooper
Speaker / microphone Transistor amplifier
Hearing aid Amplifier The big ear
Amplifier with two close-coupled transistors
Liquid Conductivity Tester

CdS Cell Light Meter with Transistor Amplifier

Super-Sensitive Photometer

The Electric Human Lie Detector
Motion Detector Tug of War
Light Hum and Noise Detector
Shot in the Dark  
OP AMP Circles of tree
Amplifier Classes  

 

 

 

 

 

 

 

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