[ARC5] Circuit Help Needed

[Richard Knoppow]

     Electronic regulator. For much more see the book at
http://tubebooks.org/Books/efce.pdf

Electronic Designers Handbook, Robert Landee, Donovan Davis & Albert 
Albrecht, 1957

On 2/10/2017 4:36 PM, Mark K3MSB wrote:
> Good Evening All
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> I picked up a nice home brew power supply that has a few items that are
> stumping me.    The photo of the circuit in question is
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> http://www.k3msb.com/temp/img005.jpg
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> It’s 700V unregulated in and 250V regulated out.     I haven’t been able
> to figure out what the 6SL7 or OB3 regulator are doing in this
> circuit.    I’ve triple checked my schematic (which I obviously had to
> hand draw from staring at the innards of the power supply).
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> The circuit does indeed work.
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> 73 Mark K3MSB
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-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL