3PDT wiring WITH true bypass - how do i use it as a power on switch?

[big bustle]

i like to keep most of my pedals connected at all times. what i would like to do is keep my battery powered switches (with input jacks connect)  at all times but not worry about battery drain.

i'd like to wire my pedals where the power is routed thru the 3pdt switch.

i have not seen any schematics or wiring diagrams using this option.

how does one do this?

why isn't this done all the time?

[The Tone God]

why isn't this done all the time?

POP!

Andrew

[choklitlove]

i would just put an extra SPST switch in it to connect/disconnect the battery instead of the stereo jack.  use mono jacks, and turn on the switch before you use it.

[GibsonGM]

There just aren't enough poles on a 3PDT switch to do this, fuc.  Using the input jack to switch is a good alternative, most common way of switching power.  I suppose you could use the switch for this by omitting the indicator LED.   Again,  "POP", lol.  Plus, you would get lag time when you engage the effect due to capacitor charging....you can hear this in Hendrix'  "Axis: Bold As Love"....he runs triplets into the solo, yells "yeah, yeah!" and right there hits his FF.  It comes up as the caps charge - pretty cool 

[JimRayden]

Theoretically there is a way - you can switch power for the LED and the circuit on one pole.

Aside from a very loud and obvious pop, some circuits also need a lil' time for startup. It's better keeping your circuits 'warmed up' when bypassing them.

I agree with others, a toggle switch for power would be the best solution in this case.

----------
Jimbo

[big bustle]

ya'll are jean-yusss-iz!

the pop should have been so obvious! i can't believe i didn't think of that.

i might just go with the switch route

[Ptron]

I built a PT-80 delay that with which I use 3PDT switch for this. It uses a millineum bypass for the LED. Sometimes it pops loudly, sometimes not at all. I can live with it, but then again I don't use the effect much. I had to do it because it sucks so much current, and needs a healthy 9 volts to work properly, that the pedal sometimes wouldn't work by the end of a show. I may to add a switch that bypasses the 3PDT when I want.

[DanielWong]

True Bypass makes a "pop"?

[The Tone God]

True Bypass makes a "pop"?

http://www.geofex.com/Article_Folders/box_pop.htm

Then read the rest of that site.

Andrew

[Barcode80]

i would suggest a simple CMOS switching circuit to turn on/off power to the battery pedals, wiring them via an external jack to a central cmos box that only connects the ground from the batteries when switched on. i'm pretty sure this could work...

[ambulancevoice]

try this!!!
do this bypass circuit using the 3pdt, and with the left over pole/throws, use them to cut the positive power connection

here is the bypass circuit
http://experimentalistsanonymous.com/diy/Schematics/Buffers%20Switchers%20Mixers%20and%20Routers/DPDT%20TB%20w%20LED.gif

[Barcode80]

circuit looks cool, a lot like the millenium. however, that doesn't solve the problem of voltage on the switch making a POP.

[darron]

easy. use the two poles to bypass the audio, and use the other pole to switch the power on/off. have the led wired to that as well so that it will only work when there's power. as stated above, that will cause a pop noise or the effect will be different as it fades in /warms up. some effects i would recommend doing this too though. my vox wah has switched power and it's not audible at all, so it's a very good idea to switch the power in it incase it's running off battery.