Electronics > Open Source Hardware

Chinese TC1 transistor tester

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cdev:
I still get so much use out of mine, possibly its because its so easy to use and always gives a usable and thought provoking answer of what it sees the DUT as being.  Its not always what I think its going to tell me. Not at all.

nigelwright7557:

--- Quote from: cdev on December 25, 2021, 10:43:01 pm ---I still get so much use out of mine, possibly its because its so easy to use and always gives a usable and thought provoking answer of what it sees the DUT as being.  Its not always what I think its going to tell me. Not at all.

--- End quote ---

While battery powered transistor testers do have their uses the test current can be little more than useless.
Some use as little as 2mA to test a transistor.
Normal working current for some transistors can be amps which is a totally different area of operation.
Hfe at 2mA can be very different to Hfe at 5 amps.

Kim Christensen:

--- Quote from: distefanom on December 21, 2021, 06:41:09 pm ---This is the exact tester I need to repair
TC-1 schematic.JPG

--- End quote ---

Did you create the schematic yourself by reverse engineering your broken unit?

distefanom:
Sorry for my late answer, but the schematic is exactly the one I posted above
 :)

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