The B+ design is like this:
380 VAC CT, GZ34 -- 5uF/630 VDC -- 10H Choke -- 100uF/500VDC -- 100uF/500VDC --bleeder Resistor. The 5uF/630 VDC is an oil cap and the
100uF/500VDC is the electrolytic. I powered on without the rectifier and the HT measure at 385 V. If the rectifier arch without the driver and output tube,what is the possible cause? I was asked to measure the resistance from the B+ connection to chassis to check. If the resistance is below 50K, there is some kind of shorts, valid?
Thanks
David
:
#2
Yep, I would disconnect everything but the power supply. The the resistance to ground should rise (as the caps charge up) to whatever bleeder resistors you have across the caps and no lower.
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