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August 03, 2020, 04:16:21 PM

Author Topic: Voltage numbers, Stereomour II  (Read 863 times)

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Offline romarin

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Voltage numbers, Stereomour II
« on: April 21, 2016, 04:43:16 AM »
I suspect this is a dopey question at best, but I don't understand how the 160v winding on the power transformer in my Steromour II kit produced 388v of B+.  I'd be most grateful if someone could explain this magic to me. Apologies for my ignorance!   :o :-\

Offline Paul Joppa

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Re: Voltage numbers, Stereomour II
« Reply #1 on: April 21, 2016, 05:25:47 AM »
The circuit is called a "voltage doubler" - Google has lots of information on it. I like it because it makes more efficient use of the transformer winding. There are a few other minor advantages as well.
Paul Joppa

Offline romarin

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Re: Voltage numbers, Stereomour II
« Reply #2 on: April 21, 2016, 06:29:17 AM »
Thank you, Paul!  That's hugely helpful.  Looks like it's a Greinacher circuit, or possible a cascade of Greinacher cells, no?  Much obliged.

Offline Paul Joppa

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Re: Voltage numbers, Stereomour II
« Reply #3 on: April 21, 2016, 05:31:49 PM »
Actually, I use the Delon bridge circuit, but same difference pretty much.

https://en.wikipedia.org/wiki/Voltage_doubler
Paul Joppa