Quote:
Originally Posted by Herald1360
...it now sounds like the original 1N4007 incarnation with two diodes was correct so why the low voltage?
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Yes, that's baffling me too. The forward voltage drop of a silicon diode is generally assumed to be lower than that of a selenium rectifier, and it's common to have to insert a resistor to drop the excessive voltage produced by the diodes, not the other way round. The photo in post #92 clearly shows a coiled-up length of resistance wire which may have something to do with it. Until Dave comes back with the results of his latest tests, we'll just have to be patient