Input/output capacitor switching

Started by randomair, March 07, 2010, 02:10:32 PM

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randomair

I would like to set up a switching arrangement for switching my input/output capacitors. Basically, I want to be able to switch to lower input/output caps at once, in so many words, a tone switch. I tried drawing this up but I cant seem to quite dial it in. Are there any wiring diagrams out there for this? Seems like i could just run the input signal through a 3PDT center lug and switch between high or low but the problem I am running into is the no matter the signal has to go to the same place at the end of each capacitor leading back into the circuit. Any ideas? Thanks!

tiges_ tendres

1 2 3
4 5 6
7 8 9

I think what you are asking is to switch input and output caps at the same time?  If you just want to switch one cap at a time, then ignore the below.  This will also probably pop, unless you hit the cap switch a few times to cycle the caps charging up and down.

Attach the input wire to pin 4, output wire to pin 6.

lets say our values are 0.01 uf and 0.1 uf.  Solder one leg of the 0.01uf cap to pin 1 of the switch, and one leg of the 0.1 uf cap to pin 7.  The two flying legs of the caps should be soldered into to the same hole on your board. 

Do the same for pin 3 (0.01 uf) and pin 9 (0.1uf) of the switch.  Solder the flying leads to the same hole on the board.  The middle unused lugs could be use for an led to indicate which cap is in the circuit.

Does that make sense?
Try a little tenderness.

randomair

Absolutely makes sense, thanks! SOmetimes on paper this stuff gets heady. Cheers!

tiges_ tendres

You could do this with a dpdt switch too.  or even two spdt switches.
Try a little tenderness.