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Friday, September 2, 2011

HACK A WEEK » Blog Archive » Simple Transistor Tester


Simple Transistor Tester

Posted on 2nd September 2011 in Weekly Hacks

This is basically a high gain amplifier with feedback that causes the LED to light and flash at a rate determined by the 10u and 330k resistor.
Remove one of the transistors and insert the unknown transistor. When the transistors are inserted with the pins in the correct position as shown in the photo, the LED will flash. To turn the unit off, remove one of the transistors.

Parts list:

1 – 10 uF polarized capacitor
1 – 1K ohm resistor
1 – 330K ohm resistor
1 – 22 ohm resistor


Read More, See Schematics and Video... 
http://hackaweek.com/hacks/?p=358

Simple Transistor Tester


Video Link...
http://www.youtube.com/watch?v=VkrIJEFFUrM&feature=player_embedded


Pretty Cool little Tool!:)

Don
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