I remember reading many moons ago about someone using a pair of 120V-12V AC transformers with (an L-Pad? a varistor?) mounted between the two, which would work as a ~0 to ~120VAC variable power supply.
I stuck the idea into the Just-in-case-I-need-it-Someday part of my memory. Now I wonder if this is, in general, A Good Idea, or if it was from Looney-Land. Obviously, a fuse or two would be needed, but is there anything basically wrong with this idea?
The concept, pictorially:
120VAC =[X]=/ 12VAC /==[VR]==/ 0-12VAC /=[X]= 0-120VAC
[X] X'former
[VR] Variable Resisitance
Thanks,
--Rich
I stuck the idea into the Just-in-case-I-need-it-Someday part of my memory. Now I wonder if this is, in general, A Good Idea, or if it was from Looney-Land. Obviously, a fuse or two would be needed, but is there anything basically wrong with this idea?
The concept, pictorially:
120VAC =[X]=/ 12VAC /==[VR]==/ 0-12VAC /=[X]= 0-120VAC
[X] X'former
[VR] Variable Resisitance
Thanks,
--Rich