Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: kagliostro on September 08, 2016, 03:04:26 pm

Title: There is a A - B - A+B toggle switch ??
Post by: kagliostro on September 08, 2016, 03:04:26 pm

Exist a toggle switch that can do A - B - A+B connections ?

or the only way is a rotary switch ?

Thanks

Franco

Title: Re: There is a A - B - A+B toggle switch ??
Post by: sluckey on September 08, 2016, 03:16:01 pm

Do you mean select A, or select B, or select A+B three position toggle? If so, yes, the C&K 7211 does exactly that. You can find them on eBay or through the big suppliers such as DigiKey or Mouser. Look at page 2 of this pdf to see how I'm using the 7211...

     http://sluckeyamps.com/VAC15/Vox_AC15_mods.pdf (http://sluckeyamps.com/VAC15/Vox_AC15_mods.pdf)

Title: Re: There is a A - B - A+B toggle switch ??
Post by: kagliostro on September 08, 2016, 03:29:03 pm

Exactly that Steve, Thanks

Franco

Title: Re: There is a A - B - A+B toggle switch ??
Post by: Tone Junkie on September 09, 2016, 06:44:50 pm

Thanks for finding this it will greatly help my plexi style builds.
Bill

Title: Re: There is a A - B - A+B toggle switch ??
Post by: kagliostro on September 10, 2016, 11:27:36 am

And it can do more

arranged in one other way I discovered it can be used for 3 inputs 1 output (or 1 input 3 outputs)

(http://www.birthofasynth.com/Thomas_Henry/Images/SN-Voice_construction/c&k7211_3way.jpg)

K

Title: Re: There is a A - B - A+B toggle switch ??
Post by: sluckey on September 10, 2016, 12:54:07 pm

Neat idea K! I think I'll steal that one. Thanks...  :icon_biggrin:

Title: Re: There is a A - B - A+B toggle switch ??
Post by: kagliostro on September 10, 2016, 02:02:10 pm

Quote

Neat idea K!

Oh, yes, I think so, but the idea isn't mine

I apologize if the way I've wrote the preceding post suggested that was an idea from me

although also I like it a lot

Franco

Title: Re: There is a A - B - A+B toggle switch ??
Post by: kagliostro on September 13, 2016, 07:49:03 am

On this side of the pond (and specifilally here) is not to easy to find a C&K 7211

however in Germany I can find some ON-ON-ON switch that are similar to the 7211 (also in dimensions)

Doing the search I've find an interesting ON-ON-ON product that is rated 10A 400V AC

I think this can be usable also for B+ switch if someone want to implement some "special" features on the amp

http://www.tube-town.net/ttstore/Switch/Toggle-Switch/Toggle-Switch-APEM-644-H-2-DP3T-ON-ON-ON::7379.html (http://www.tube-town.net/ttstore/Switch/Toggle-Switch/Toggle-Switch-APEM-644-H-2-DP3T-ON-ON-ON::7379.html)

Franco