Vintage Synth Repair

The +11.5 comes from the 10 ohm resistor and filter capacitor located next to 
the Tracking pot in the upper left corner.  The marking of 11.5v at that point 
is the source of the voltage for the other markings of 11.5 on the schematic.  
In the actual circuit it would (most likely) be a little than more than +11.5, 
but less than +12V.



----- Original Message ----
From: Quazimodo <noddyspuncture@...>
To: vintagesynthrepair@yahoogroups.com
Sent: Thu, February 17, 2011 12:57:13 PM
Subject: [vintagesynthrepair] Moog 901B oscillator

Hi guys,

I have a question about the Moog 901B Osc.

Looking at the schematic here:

http://www.freeinfosociety.com/media/images/4142.jpg

I see the +12v, -10v and -6v points noted - but I am also seeing three points 
marked +11.5v

Where was this +11.5 derived from originally?

If you look at the connector strip pin-out on the bottom right - there is no 
+11.5v coming in..!

Cheers,
TOM
  



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