DPDT & SPDT to Hoffman relay switching

[tubenit]

I thought this might be useful to someone.   I use midboost, PAB (preamp boost), Plus-Normal, Clean to OD, and will be trying out Jazz/Rock switching.


I typically think about this and draw them up using a mental picture of mini-toggles that are DPDT or SPDT.  Then I redraw them using the Hoffman style relay switching.


CHECK for ERRORS in the drawings.  IF you find any, please post a corrected version on this thread.  With the exception of the jazz/rock switch, I have these currently active in my amp builds.


Hoffman relay information with schematics, layouts, photos, etc............. can be found in ARCHIVES here:  Relay circuit & layout board & ft switch (el34world.com)


I have found Doug's relay switching to be super quiet and very effective and reasonably easy to wire up.


These are just a few examples of how his relay switching can be used.  Obviously, there are many other ways to use it. Essentially, anything for switching on a SPDT or DPDT, I think could be converted to relay switching.


With respect, Tubenit

[EL34]

Nice Jeff!