Guest Posted May 2, 2004 Report Share Posted May 2, 2004 I found this circuit on a site and decided to put it here. Its simplicity caught me.TO TEST AN SCR :-When Kathode is closed,lamp does not light.When Gate is also closed, the lamp lights to full intensity.Then when Kathode is opened, even momentarily the lamp does not close again when Kathode is closed.This is the ON & OFF operation of SCR.TO TEST AN TRIAC :-Hookup the TRIAC as; Kathode as MT1, Anode as MT2,Gate as GateExecute the tests same way as a SCR.Lamp should be on only when Kathode switch is ON and Gate switch ON momentarily.In any other case the lamp should be off.If not the TRIAC is defective. Quote Link to comment Share on other sites More sharing options...
Kevin Weddle Posted May 2, 2004 Report Share Posted May 2, 2004 Has anybody seen the circuit with the PUT across a capacitor across an opamp. This generates a sawtooth. A rapid discharge of the capacitor. I think these 5 layer devices pose a serious physics debate. You know the construction lends itself to PN voltages even though we treat them as a short. There is some serious doping going on with these devices. Quote Link to comment Share on other sites More sharing options...
ante Posted May 2, 2004 Report Share Posted May 2, 2004 Kevin,I have not seen this circuit you are referring to where can I find it, seems interesting.Ante ::) Quote Link to comment Share on other sites More sharing options...
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