[ARC5] HV oil caps

[Christopher Bowne]

The filament windings on the transformers used in HV power supplies are insulated for high voltage because in the case of direct filament type cathode rectifiers such as the 5R4GY, the rectified HV DC is pulled off the filaments of the tubes.

Sent from my iPhone

> On Jun 3, 2023, at 15:22, releazer at earthlink.net wrote:
> 
> I have a military grade filament transformer made by GE.  Primary is multitap 115-132V with 535V.WVM.  Secondary is 6.6V with 1.07 KV. WVM.  This is from a an early 1950's radar set. So some transformers used in high voltage equipment are designed to handle that kind of voltage in terms of insulation, even when operating at much lower voltage.
> 
> Wayne
> WB5WSV 
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