Transistor tester fits into your pocket


Posted on Oct 8, 2012

It can be helpful to rapidly and easily determine the polarity (npn or pnp) and function of a transistor. The pocket-transistor tester in Figure 1 is ideal for quickly testing without regard to such parameters as gain and frequency response. You connect the transistor, or device under test, between the collectors, T, of an astable multivibrator. Thus, the VCE voltage of the device under test is alternately positive and negative.






Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Digital-ir-transmitter
Laser Listening Device
Arduino Button
USB Fuse
Mini MW Transmitter
M3850A Programmer
Simple Audio Amplifier Circuit Using LM386 PCB
Lowest Phase Noise PLL Synthesizer Using Fractional-N Technology
Test Instruments and Measuring Devices
Full complementary symmetry amplifier CL



Top