View Single Post
Old 06-10-2013, 08:27 PM   #16
Joe K
Senior Member
 
Joe K's Avatar
 
Join Date: Jul 2010
Location: Cow Hampshire
Posts: 4,188
Default Re: 12V horn on 6V system, WORK???

Quote:
Originally Posted by Rock Hornbuckle View Post
A coil is a transformer and it works on a Model A. I have used many transformers with DC voltages as high as 400VDC without encountering the problem that you suggest. Is there something I'm missing?
I think he's referring to a straight AC transformer. What you're referring to was used in the early automobile radios as a 'vibrator' and interrupted the dc circuit thereby simulating a sinusoidal current for a step-up transformer.

And yes, some of these radio "step up" transformers would produce the B+ voltages for vacuum tube radios.

Gosh, I haven't thought of those radios (or the gentle hum behind the dash) since I was a kid!

Joe K
__________________
Shudda kept the horse.
Joe K is offline   Reply With Quote