Transistor Tester


Posted on Jan 5, 2013

A 555 timer drives Ql through Q4 with a square wave. LED1 and LED2 light when an npn or pnp transistor respectively, are


Transistor Tester
Click here to download the full size of the above Circuit.

connected to the text terminals. If LED3 and LED4 light equally as LED1 and LED2, the transistor is functional. If LED3 and LED4 are brighter than LED1 or LED2, the transistor is shorted.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

12 V battery charger
1Khz Square-Wave Generator
Sine Wave Generator Circuit
PICAXE Infrared Remote Control
pic LM032
Infrared Fire-Cracker Igniter circuit



Top