02-01-2018, 10:29 AM
The sel rect will drop line voltage app 7 volts, the silicon diodes drop voltage 7/10 of a volt big difference. You can either use about 10 silicon diodes in series or a diode and a resistor. With the higher line voltages today I would use a couple of diodes and a resistor. Have done this on several Z sets and been happy with the out come. The reason for using more than one diode so if one fails the set still receives only dc.