wants to build the Serge Positive Slew ,to mention it's only single Positive slew ,and not dual like in original Serge ,however it's easy to make as the board is big and suitable for beginners ,not dense as in the CGS boards which i also have redrawn for this module,the board is 100x100mm ,tested and workin ,few values of resistors are not labeled but very easy to find looking at the positive slew schematic ..the resistor connected to out and pin 8 of the lower LM3900 is 820K and the resistor from neg (negative pulse out) and pin 9 is 220R ,between base of the transistor and out is 4k7,Good luck !
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