Channel Switching HELLLP

[skyyamps]

I am building a model of the Orange AD140TC ( i know crazy) and I am confused as to how I can have both a footswitch and a toggle switch on the front panel both affect my channel switching. HELP?

-collin

[Structo]

I am building a model of the Orange AD140TC ( i know crazy) and I am confused as to how I can have both a footswitch and a toggle switch on the front panel both affect my channel switching. HELP?

-collin

This is how the D"lite does it.
The relay on the right is the OD switch.
Left one is PAB.
The switches from left to right are PAB (boost), OD and bright.
Not sure how well this translates to your build but this allows front panel switching as well as foot switching.

[skyyamps]

well you are correct, i am not sure how that translates into my design

[skyyamps]

i guess im confused as to if i need a special integrated circuit for it

[Bob-I]

The Dumble style amps use a relay. Check out the Dumble files section.

Basically you want the relay to do the switching. Then you can trigger the relay with either switch. If you want the footswitch to work, turn off the panel switch.

[ampgeek]

Hey Skyy,

The relay activation supply voltage is wired through two switches which are in parallel.

One switch on the panel and one switch on the floor.

Does your plan include a power supply for relay switching? Many plans, including the D'lite, use the 5V PT winding typically intended for the rectifier tube filament. You may have this available if you are using diodes as opposed to a bottle rectification.

Good luck,
Dave O.

[mhuss]

...and if you want to be really clever, wire up the chassis switch so that it is disabled when a wire is plugged into the footswitch jack. Otherwise, when the chassis switch is 'on' the footswitch will no longer work.

--mark

[skyyamps]

actually im not sure i have any power to spare. I'm running off a Marshall 50W replacement PT.

[Structo]

You can add in a small filament transformer.

[ampgeek]

Or...you could tap off of the 6.3 filament winding which is also quite common.

Check below for one of the cute little circuit boards that includes diode(s), filtering and relay all in one.

Cheers,
Dave O.


https://taweber.powweb.com/store/chansword.htm

[skyyamps]

thanks amp garage community, you're really saving my balls here

[paulster]

Take a look at a Marshall Silver Jubilee (2550/2555) schematic as they have a front panel switch and a footswitch jack. You can get one from www.drtube.com

Basically the front panel switch is connected to the two switched contacts on a Cliff jack, and the relay board to the unswitched contacts.

As soon as you plug in a footswitch it disconnects the front panel switch and takes over, just as Mark described.

You could implement the Weber relay board that way very easily I'd imagine.

[skyyamps]

ok so how do I physically wire the switch, jack, and relay together? I have a 4 lug jack and a SPST toggle switch both of which are available for change...

[skyyamps]

update! i know the orange schematic uses 2 omron G5V-2s as its relays for the channel switching. my concern is still how I would connect this to a toggle and a footswitch jack.

the pins are shown here
http://www.omron.com/ecb/products/pdf/en-g5v2.pdf

and heres the schematics
http://schematicheaven.com/newamps/orange_ad140tc.pdf
(crazy confusing orange)

thanks

[ampdoc1]

Here is the latest schematic of my relay board. It uses the 5VAC rectifier winding, and drives 3 relays, each with an onboard 'status' LED, a front panel LED, and a footswitch LED.
The scheme here enables either the FS or the front panel switch to turn on all the LEDs, but requires 5 wires. Obviously you could lose 1 if you just use two relays.
Perhaps the wiring diagram will help some. I'll take a look at your exact needs tomorrow, and send you some more info.

ampdoc