TB or not TB, that's the question

[Fraser, Colin J]

> -----Original Message-----
> From: Rob Hukin [mailto:robh at biols.susx.ac.uk]
> Sent: Wednesday, April 29, 1998 12:14 PM
> To: Fraser, Colin J
> Subject: RE: TB or not TB, that's the question
> 
> 
> >It also helps the cloning process if you have a real 303, so you can
> >find which two resistor values in the filter schematic are wrong by a
> >factor of 10, and prevent your filter working...
> 
> Hi Colin,
> 
> Please don't tease us like that! - can you tell me which 
> values they are so
> I can amend the schematic for future reference...
> 

Sorry for being vague - it took me a lot of head scratching to work out
what was wrong with my filter...
R110 and R111, which are labelled as 2.2k in the schematic are 22k in my
303.
Also, the npn trannys used as diodes in the ladder are not labelled in
the schematic either, but I can't remember offhand what they were. I
think it was 2SC1814. I couldn't source all those jap transistors
anyway, so I had to use close equivalents - except for the 2SK30Ys I
pinched from the same sh09 filter I got the BA662A for the vca from.


Colin f