Quote:
Originally Posted by M3-SRT8
Thanks for jumping in. Soooo, the TAIL of the arrow attaches to the lead that was attached to the " + " lead of the Selenium Rectifier?
Huh? Oh, Boy.
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Nope. Look at a tube rectifier the B+ line comes from the cathode....He is right in that there does need to be a voltage potential across the diode as marked in his drawing to conduct. Think of the old selenium power supply and the load of the TV as 2 batteries in series plus on one connects to minus of the other. They marked the selenium not with it's own polarity but with the polarity of the other battery it connects to.
The stripe on a new diode is the B + end of the selenium.
The old selenium polarity notation is bassackwards from modern convention.