Switching current flow in a transformer primary?

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electronice123

Joined Oct 10, 2008
346
I have been wondering lately.

Is it possible to have a transformer in which the direction of current flow in the primary winding is reversed every other pulse?

What effect would this have on the transformer, would it's output change polarity every time the current flow through the primary changed direction?

Would it destroy the transformer?

How can this be done, I was thinking you could use relays on the primary positive and ground that would switch every other pulse, what other ways could it be done?
 

beenthere

Joined Apr 20, 2004
15,819
One common way is to feed DC to the primary center tap, and use devices like FET's to alternate the current path through each winding. IBM managed this at 20 KHz with SCR's (unreliably).
 
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