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  3. Anyone know more about analogue electronics than I do know if measuring the same resistance and voltage drop (diode test) in either direction accross the gate and cathode of an SCR ok?

Anyone know more about analogue electronics than I do know if measuring the same resistance and voltage drop (diode test) in either direction accross the gate and cathode of an SCR ok?

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  • crashtestdev@woof.techC This user is from outside of this forum
    crashtestdev@woof.techC This user is from outside of this forum
    crashtestdev@woof.tech
    wrote last edited by
    #1

    Anyone know more about analogue electronics than I do know if measuring the same resistance and voltage drop (diode test) in either direction accross the gate and cathode of an SCR ok?

    #electronics

    ruenahcmohr@infosec.exchangeR ret@furry.engineerR 2 Replies Last reply
    0
    • crashtestdev@woof.techC crashtestdev@woof.tech

      Anyone know more about analogue electronics than I do know if measuring the same resistance and voltage drop (diode test) in either direction accross the gate and cathode of an SCR ok?

      #electronics

      ruenahcmohr@infosec.exchangeR This user is from outside of this forum
      ruenahcmohr@infosec.exchangeR This user is from outside of this forum
      ruenahcmohr@infosec.exchange
      wrote last edited by
      #2

      @crashtestdev does it have a shunt resistor across it? what are you getting? If its the removed part, thats not good.

      crashtestdev@woof.techC 1 Reply Last reply
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      • crashtestdev@woof.techC crashtestdev@woof.tech

        Anyone know more about analogue electronics than I do know if measuring the same resistance and voltage drop (diode test) in either direction accross the gate and cathode of an SCR ok?

        #electronics

        ret@furry.engineerR This user is from outside of this forum
        ret@furry.engineerR This user is from outside of this forum
        ret@furry.engineer
        wrote last edited by
        #3

        @crashtestdev (not an expert) but I think I’d expect two junction drops from anode to cathode and one from gate to cathode?

        bytex64@awesome.gardenB 1 Reply Last reply
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        • ruenahcmohr@infosec.exchangeR ruenahcmohr@infosec.exchange

          @crashtestdev does it have a shunt resistor across it? what are you getting? If its the removed part, thats not good.

          crashtestdev@woof.techC This user is from outside of this forum
          crashtestdev@woof.techC This user is from outside of this forum
          crashtestdev@woof.tech
          wrote last edited by
          #4

          @RueNahcMohr No resistor, 0.1v drop measured in both directions, and tested removed out of circuit

          (edit: thank you for helping!)

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          ruenahcmohr@infosec.exchangeR 1 Reply Last reply
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          • crashtestdev@woof.techC crashtestdev@woof.tech

            @RueNahcMohr No resistor, 0.1v drop measured in both directions, and tested removed out of circuit

            (edit: thank you for helping!)

            Link Preview Image
            ruenahcmohr@infosec.exchangeR This user is from outside of this forum
            ruenahcmohr@infosec.exchangeR This user is from outside of this forum
            ruenahcmohr@infosec.exchange
            wrote last edited by
            #5

            @crashtestdev I'm sorry, thats not a semiconductor anymore 😞

            ruenahcmohr@infosec.exchangeR 1 Reply Last reply
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            • ret@furry.engineerR ret@furry.engineer

              @crashtestdev (not an expert) but I think I’d expect two junction drops from anode to cathode and one from gate to cathode?

              bytex64@awesome.gardenB This user is from outside of this forum
              bytex64@awesome.gardenB This user is from outside of this forum
              bytex64@awesome.garden
              wrote last edited by
              #6

              @crashtestdev @ret Yeah 0.1V seems too low for any kind of unpowered silicon gate. I’d say that’s blown.

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              • ruenahcmohr@infosec.exchangeR ruenahcmohr@infosec.exchange

                @crashtestdev I'm sorry, thats not a semiconductor anymore 😞

                ruenahcmohr@infosec.exchangeR This user is from outside of this forum
                ruenahcmohr@infosec.exchangeR This user is from outside of this forum
                ruenahcmohr@infosec.exchange
                wrote last edited by
                #7

                @crashtestdev would you like any help finding a replacement?

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