Audio Asylum Thread Printer
Get a view of an entire thread on one page
|For Sale Ads|
In Reply to: RE: " Maybe I should be looking for a toroidal transformer" posted by Triode_Kingdom on June 13, 2017 at 19:14:02
If you reverse connect a transformer you are running it outside of its design parameters. Give it a try with cheap transformers but bear in mind that winding current and voltage ratings may be compromised as may B-H characteristics.
"If you reverse connect a transformer you are running it outside of its design parameters."
Hmm... I'm not sure why you say that as a blanket statement. Of course with any transformer, whether reverse connected or connected in the standard way, it is always possible to run it outside of its design parameters. But if the transformer is reverse connected and the normal secondary (now being run as the primary) is not asked to pass any more current than it would when running as the secondary in the usual configuration, is there any reason why it would be "outside the design parameters"? (And assuming the voltages on the windings are essentially within the design voltages.)
Would the transformer even "know" that it was running in reverse-connected mode? All it knows is that a primary current within its design parameters is flowing, and a secondary current within its design parameters is flowing. Why would the transformer care?
Again, I am assuming both primary and secondary currents and voltages are kept adequately within design parameters. I think this was the case in TK's original example. (120V on a nominal 115V winding is within acceptable tolerances, I think.)
For power transformers I agree since we are just talking voltage and current however if we expand this to audio transformers then we also have to take into account bandwidth and frequency response doesn't always work as expected when you change connections.
Post a Message!
This post is made possible by the generous support of people like you and our sponsors: