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Building Logic Gates using NPN Transistors
Push pull follower
Simple Transistor Tester
Rain Alarm Circuit
Operational Amplifier ( OPAMP )
How to identify PNP and NPN Transistors (with a Simple Circuit)
Very simple and cheap Guitar/Bass distortion pedal
how to make a very simple NPN transistor tester
Use an NPN Transistor as a Switch! (No Soldering!)
Amazing Soldering Iron
Posted:Dec 29, 2009
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