[sdiy] Experimental Moog 904a VCF project progress report - It's filtering! :O)

Gergo Palatinszky Gergo_Palatinszky at epam.com
Mon Aug 24 12:24:31 CEST 2009


Sziasztok! - Hi All,

Specification:
-	Should fit to eurocard pcb
-	Rotary switch (4 pole 3 way) have to be pcb mounted (in the centre)
-	Designed for THAT arrays but any kind of transistors can be used (might sometimes you will
have a little trouble with twisting the legs)
-	Main aim is the project that everybody can compare modern component vs. old (original tr.s 

and so...)

Current state: pcb plan ready, 3 pcbs were made. 2 almost complete. 1 has been finished.
The first sound has come out from it :O)  but it seems I have to change some resistor/trimmer 

values to be calibrated perfectly.
The first version of the pcb is very compact sometimes it's difficult to have enough space for 

measurement/test and one cap. to get enough place...

The output of the project will be a pcb plan and might component list which will be published here 

(no readymade PCBs, no kit - sorry)

Br,	

Pala




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