Classic General Motors video from 1996. Video starts around the 55 second mark. Posted by Bill O'Connell, Triton College Automotive Instructor, River Grove, IL
Presenter states the DMM displays "voltage at which the diode begins to conduct" when testing a forward-biased diode in diode mode. Doesn't it actually display the voltage drop instead? At least that's the way an 87V works; don't have an 87 to compare with.
Not sure about that but the DVOM's diode function provides enough voltage to force the electrons and holes to the junction in forward biased mode. The ohm's functions does not provide enough voltage to force the electrons and holes. My 87 produces 3.7V and my series 87-5 produces 7.27V. I believe that the minimum voltage to forward bias a germanium doped diode is 1.5 volts.
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I needed the info about the RANGE, and reminder to put the pos lead back, great video!
VERY very very n VERY knowledgeable electrical functional areas technician, shall I said, SENIOR technician! Thz 4 in depth lecture indeed! CA USA
SUBSTANTIAL Thank you
From Nick Ayivor from London England UK 🇬🇧
Great video! Thank you for posting!
Great video. Anymore?
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Presenter states the DMM displays "voltage at which the diode begins to conduct" when testing a forward-biased diode in diode mode. Doesn't it actually display the voltage drop instead? At least that's the way an 87V works; don't have an 87 to compare with.
Not sure about that but the DVOM's diode function provides enough voltage to force the electrons and holes to the junction in forward biased mode. The ohm's functions does not provide enough voltage to force the electrons and holes. My 87 produces 3.7V and my series 87-5 produces 7.27V. I believe that the minimum voltage to forward bias a germanium doped diode is 1.5 volts.
incomplete video
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