[Milsurplus] [ARC5] GO-9 Project: Why the Resistor?

[David Stinson]

On 10/22/2019 4:51 PM, Hubert Miller wrote:
> Dave, I thought the GO had a filament voltage adjust ? Am I wrong ?
> -Hue
Yes; R-201 is a large 25 Ohm pot, but it is in the Primary circuit of 
the transformer which supplies all filament busses, so it varies them 
all proportionally.  The drop through R-312 would maintain the same 
ratio to the unattenuated voltage going to the MO.

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