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Old 07-01-2020, 02:07 PM
Jon1967us Jon1967us is offline
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Quote:
Originally Posted by old_coot88 View Post
Which way did you install the diode? Seleniums are often marked with a plus sign(+) on the cathode end. With Si diodes, the banded end is the cathode.
I have the cathode indicating band corresponding to the cathode “+” indicator on the Selenium in the schematic.

In other words, the cathode side of the Si diode is in the same position of where the “+” side would’ve been on the Selenium. I guess I’m aware of “discrepancy” between how Seleniums used to be notated on schematics. Anyway, if I orientate the Silicon the opposite direction, hardly any signal is displayed on screen, which was the situation prior to replacing the bad Selenium diode.
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