17-03-2025, 04:15 PM
(This post was last modified: 17-03-2025, 04:18 PM by ppppenguin.)
A lot of battery eliminators were pretty evil, at least by modern standards. I'm not surprised, they had to be built down to a price in an age when rectifiers and capacitors were expensive. LT hum had to be kept pretty low with directly heated valves. At least the earlier battery valves were a bit more robust than Dx9x types.
I'd be wary of the transformer too, but at least that can be tested with a megger.
Building a modern PSU is entirely valid, but using a rechargeable LT cell (voltage a bit low but probably OK) and PP3s or coin cell stacks (as researched by Mike Watterson) has a lot to commend it.
I'd be wary of the transformer too, but at least that can be tested with a megger.
Building a modern PSU is entirely valid, but using a rechargeable LT cell (voltage a bit low but probably OK) and PP3s or coin cell stacks (as researched by Mike Watterson) has a lot to commend it.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
