Transistor_tester

Risto80 · 1st July 2007, 10:29 PM

Hi
I have made this project but id doesent work.
if enyone have some sugesstions aboutthis proekt or have new proekt for testing the transistirs

anatech · 1st July 2007, 10:44 PM

Hi Risto80,
Why not simply use the diode test function on your ohmmeter? There are a number of different pinouts used for transistors and you would generally use the ohmmeter to figure this out anyway.

-Chris

sandyK · 1st July 2007, 11:21 PM

The method descibed by Chris is invaluable for identifying the pinout and type (NPN/PNP) of unknown or unmarked transistors. However, most modern DVMs, even the medium priced ones,
have a transistor tester mode for small signal type transistors . The accuracy of the HFE reading often varies considerably among different brands of DVM. Where possible,use "Google" to search for data on your type of transistor, so that you know which part of the transistor socket to plug into.

SandyK

1st July 2007, 10:44 PM	#2
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Hi Risto80, Why not simply use the diode test function on your ohmmeter? There are a number of different pinouts used for transistors and you would generally use the ohmmeter to figure this out anyway. -Chris __________________ "Just because you can, doesn't mean you should" © my Wife

1st July 2007, 11:21 PM	#3
sandyK diyAudio Member Join Date: Apr 2007	Transistor Tester The method descibed by Chris is invaluable for identifying the pinout and type (NPN/PNP) of unknown or unmarked transistors. However, most modern DVMs, even the medium priced ones, have a transistor tester mode for small signal type transistors . The accuracy of the HFE reading often varies considerably among different brands of DVM. Where possible,use "Google" to search for data on your type of transistor, so that you know which part of the transistor socket to plug into. SandyK

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