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Switching circuit and footswitch for new amp
Switching circuit and footswitch for new amp
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Old 10th September 2019, 10:11 AM   #1
akkar is offline akkar  Italy
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Default Switching circuit and footswitch for new amp

I知 designing switching circuit for my amp using DPDT relays.
One relay will turn on overdrive, the other one preamp boost.

I値l have two toggle switches on the frontal panel (to power the relay coils) and two LEDs as indicators.

I知 planning to use a footswitch too (same configuration, two switches and two LEDs) and what I壇 like to achieve is this:

When the footswitch is connected the switches on the front panel must be isolated (they must not influence the power supply on the relay coils which will instead be controlled by the footswtich), however I壇 like that the LEDs follow the status of those on the footswitch.
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Old 10th September 2019, 10:19 AM   #2
DF96 is offline DF96  England
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I am going to guess that this is a guitar amp. If so, this thread should be in Instruments and Amps section.
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Old 10th September 2019, 10:20 AM   #3
akkar is offline akkar  Italy
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Ooops, is it possible to move it there?

Or delete this one?
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Old 10th September 2019, 10:28 AM   #4
DF96 is offline DF96  England
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Click the red triangle and ask the Mods to move it.
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Old 10th September 2019, 10:29 AM   #5
pinkmouse is offline pinkmouse  Europe
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Switching circuit and footswitch for new amp


Done!
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Old 10th September 2019, 07:41 PM   #6
turk 182 is offline turk 182  Canada
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so two more nc relays on the control lines and bob's your uncle....
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Old 10th September 2019, 10:57 PM   #7
PRR is online now PRR  United States
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Use a Stereo Switched 1/4" jack (5 lugs).

Wire so when the plug is out, the front panel switches drive the relays. When the plug is in, the FP switches are disconnected and the foot pedal switches drive the relays.

The LEDs can be wired across the relay coils.
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Old 10th September 2019, 11:38 PM   #8
Audio1Man is offline Audio1Man  United States
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USE A SWITCHCRAFT 4B OR EQUIV. HERE IS A SCHEMATIC.
Attached Images
File Type: jpg FOOTSWITCH-CKT.jpg (60.2 KB, 31 views)
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Old 11th September 2019, 05:37 AM   #9
akkar is offline akkar  Italy
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Great, the only problem with yhis is that I'll not have LEDs both on the front panel and on the footswitch, right?

Cause witg the switched stereo I dont have enough pins to pass the V+ to the footswitch
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Old 11th September 2019, 09:20 AM   #10
turk 182 is offline turk 182  Canada
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that's simpler then what i was thinking ...footswitch led's could be powered by a battery.
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