Electroswitch Wiring Diagram

[UltraHookedOnPhonix]

I'm pretty sure this is how to wire the Electroswitch DG40303N

[IMG:800:799]http://i205.photobucket.com/albums/bb17 ... Wiring.jpg[/img]

Anyone see anything weird?

[Structo]

Whoa!
Is this a joke?

If not, I just use the switch from Hoffman and connect four wires to it and call it a day.....

[UltraHookedOnPhonix]

Actually, no.

This is the exact switch used in many recent Dumble amps, like this one:

[IMG:800:535]http://i205.photobucket.com/albums/bb17 ... lector.jpg[/img]

If a connection goes bad on the switch you are talking about, your output transformer is left hanging without a load (ouch!!!). Not so with the wiring accomplished with this switch.

[Guitarman18]

Thanks for doing this UltraHookedOnPhonix. Even though I wired mine up a while back, (I haven't got trannies in, so have not test fired yet) it's nice to get confirmation that my grey cells are working.

[martin manning]

This is a 3-pole switch, so wired this way it is triple-redundant, and if all three contacts are functioning the current rating (per the data sheet) is 1.5A for each contact x 3 = 4.5A @ 28VDC. Even this is cutting it close though, since 100W into 4 Ohms is 5A (at 20V).

This seems to be a common theme from a fail-safe point of view, as you can see in the #124 pictures the PAB and OD DPDT slide switches are wired as two SPDT's in parallel.

MPM

[Noel Grassy]

Yeah, but thankfully the Hoffman (NKK) switch has massive blades for each section. They'll glow for awhile before buckling and taking out your OT iron.

I like the triple redundancy factor never the less!

[tubedogsmith]

where do you get these things?

[ic-racer]

Excellent, thanks for posting I have been wondering about it for my HRM layout. Maybe there is some way I can show this on the HRM schematic.

Without the switch in hand, I was unable to figure that switch out based on the switches datasheet.

[Funkalicousgroove]

just wire it in paralell

[UltraHookedOnPhonix]

-Tubedogsmith-

Seems the majority of these suppliers are running low on stock:

www.mouser.com Part#: 690-D4G0303N
www.alliedelec.com Part#: 747-7080
www.digikey.com Part#: 451-1099-ND
www.newark.com Part#: 06M4664
www.onlinecomponents.com Part#: D4G0303N

[martin manning]

Excellent, thanks for posting I have been wondering about it for my HRM layout. Maybe there is some way I can show this on the HRM schematic.

Without the switch in hand, I was unable to figure that switch out based on the switches datasheet.

Assuming the 4-Ohm setting is CCW, something like this?

MPM

[tubedogsmith]

-Tubedogsmith-

Seems the majority of these suppliers are running low on stock:

www.mouser.com Part#: 690-D4G0303N
www.alliedelec.com Part#: 747-7080
www.digikey.com Part#: 451-1099-ND
www.newark.com Part#: 06M4664
www.onlinecomponents.com Part#: D4G0303N

thanks!

[glasman]

I have been using the NKK in several amps for over ten years, no failures. Better rating also, 6A @ 125V ac.

Gary

[guitarsnguns04]

for guys whos use a switch with just four terminals is there somehing we could put into the circuit to protect our trannys in the event of a switch going bad?

[UltraHookedOnPhonix]

Quick off-shoot:

Dumble #183 or #184 (made in 87') seems to have been the first ODS to feature the impedance selector.

Dumble #182 and #185 (strangely enough) doesn't feature the switch.