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How to test 2N6027 (SILICON PROGRAMMABLE UNIJUNCTION)

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Ian.M:
You'll probably find your SCRs are *FAR* less sensitive than a real PUJT, so need much lower resistor values in the test circuit.
Here's a LTspice sim using a Littelfuse EC103D1 400V 0.8A  sensitive TO-92 SCR as an 'inverted' PUJT.   I started from the 2N6027 test circuit, flipped it, then reduced resistor values till it oscillated.

SilverSolder:

Don't forget to raise a case with eBay and get your money back for the fake components...   teach the scammers a lesson!

Typically they won't ask you to send them back (they would have to pay for it and it isn't worth it to them).

I've seen this movie a few times now... 

sdancer75:

--- Quote from: SilverSolder on June 17, 2020, 12:50:19 am ---
Don't forget to raise a case with eBay and get your money back for the fake components...   teach the scammers a lesson!

Typically they won't ask you to send them back (they would have to pay for it and it isn't worth it to them).

I've seen this movie a few times now...

--- End quote ---

Unfortunately, eBay does not keep the refund or open request option for more than 3 months..... but I will try to contact them directly for fake components.

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