J
Jiks
- Jan 1, 1970
- 0
What will you see if u measure a sensitive Voltmeter to the end leads
of a Diode ?
of a Diode ?
Jiks said:What will you see if u measure a sensitive Voltmeter to the end leads
of a Diode ?
If it is in the dark, zero.
Steven said:True if a perfect voltmeter, but most likely you'll see a little leakage
current and hence a small voltage.
Steven said:True if a perfect voltmeter, but most likely you'll see a little leakage
current and hence a small voltage.
Jiks said:But to rectify the effect..... dont the stray Rf signals be greater
than .6 V [ for Si ] ???
If you have the meter set to measure volts, zero.Jiks said:What will you see if u measure a sensitive Voltmeter to the end leads
of a Diode ?
What will you see if u measure a sensitive Voltmeter to the end leads
of a Diode ?
John said:Are you claiming that a diode produces power (pushes current with a
self generated potential drop)?
John said:But then, it is not in the "dark". ;-)
Peter said:John Popelish wrote:
No. He's claiming a voltage picked up by the test-leads (Hence the
word "Sensitive Voltmeter") due to RF and AC signals in the air.
Small signal diodes can rectify stray RF and AC fields that are
picked up on the test leads.
Are you claiming that a diode produces power (pushes current with a
self generated potential drop)?
Steven said:No, of course not. But the best voltmeters made still have picoamps of leakage
and this will generate a voltage. Also thermal mismatches will generate
enough current to show a voltage across the diode. If sensitive is defined
to be ZERO input current and isothermal leads, then the diode will read
zero in the dark.