It strikes me that a JFET, junction field effect transistor, has the same basic structure as a unijunction transistor. Has anyone here tried using a JFET as a unijunction transistor? How has it worked out? What is a good cheap type to get for the purpose?
Bill
-- Fermez le Bush
With only 2 transistors (1 NPN & 1 PNP) you can simulate a programmable unijunction transistor (PUT) - simply connect the base of each transistor to the collector of the other, the emitters are the anode and cathode. Technically since you have access to both C/B joins the device you have created is a silicon controlled switch (SCS) you can regard this as a thyristor with an anode gate as well as a cathode gate - and if you ignore the cathode gate its a PUT.
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