Craig anderton's quadrafuzz...

[gaddargaddar]

I've got a problem with the schematic in the Craig Anderton's book...Schematic is on the page 145 ... I'd like know where "R69", which is a "68k" resistor, will be connected to??? In my book it's connected to the IC1c's Output(Pin10) but the other end of the resistor wasn't connected, it's in the air according to schematic ... Please help me I'm trying to draw the schematic than etch the card thanks again ... also could somebody tell me how the switching circuit works...

[sfr]

I'm assuming you mean R36?  (Or at least, it's labelled R36 in my copy of DIYPFG, and sure enough, it's a 68k resistor connecting to pin 10 of IC1c, and "hanging" on one end.) 

I would assume it's meant to be connected back around to pin 8, (and probably pin R27) and sure enough, a quick search found a copy of the schemo (albeit small) at the PAIA site, which confirms that:

http://paia.com/ProdArticles/quadrafz-design.htm

[gaddargaddar]

yes it''s "R36" sorry my mistake ... thanks for the help again ... I'll send the PCB and layout as soon as possible