Re: HP 130A restoration
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OK, I see that now—schematic is hard to read. Agree, looks like the two sections depend upon each other.? Jeremy? On Thu, May 2, 2024 at 8:00?AM factory via <bobradios11=[email protected]> wrote: Apparently V30 & V33 have their heaters fed from the +88V rail, in the series string of 8 valves, having only +31V is going to prevent the control valve/tubes from working in the -150V & +88V, seems these rails are dependant on each other. |
Jeremy Nichols