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In Reply to: RE: It's not that complicated... posted by Triode_Kingdom on October 18, 2014 at 14:43:41
Did a search with "Economy supply" and found this interesting site that you may already know of.
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That's a nice link. I've never seen the version with the doubler. I have a use for that exact thing in an upcoming project!EDIT: I just ran this through SPICE, and the six-diode doubler really works well. The output capacitor receives a recharge pulse twice as frequently as in a standard full wave doubler, and each pulse is half the usual current (for a given load). Very nice!
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Buy Chinese. Bury freedom.
Edits: 10/20/14 10/20/14 10/20/14
... let us know how it turns out if you build it. I think such a topology can serve the community if it sounds good. The current requirements on the tranny and bridge are severe...
Regards,
Joris
"The current requirements on the tranny and bridge are severe..."
That's what the author of the article said too, but my SPICE model didn't agree. Peak secondary current in the six-diode doubler was almost identical to that in a two-diode (full wave) doubler. Maybe the author was referring to the dual output version ("4x8"). I'll look at it again when I get home from work today.
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Buy Chinese. Bury freedom.
Yes I was referring to the requirements the "4x8" imposes on the tranny and bridge. In that configuration, D7 and D8 of the doubler are replaced by D3 and D4 of the bridge rectifier, which loads them hard since they must supply current for the other voltage rail as well.
I dodn't realize you wanted to use the doubler independently - my apologies.
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