[Milsurplus] [ARC5] Homebrew choke

Hubert Miller kargo_cult at msn.com
Wed Aug 17 13:44:52 EDT 2016


As long has you have a power transformer, where you don't need to have one leg of the AC grounded, you are best off with a fullwave voltage doubler,
not a halfwave voltage doubler. 
IIR now, the microwave ovens with the heavy power transformer ( not RF HV supply ) have one side of the HV AC transformer connected to the transformer
frame, so they use the series-cap halfwave doubler. But there's no need to care about ripple in the DC HV there.
-H


From: Milsurplus [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of hwhall at compuserve.com
Sent: Tuesday, August 16, 2016 10:02 PM
To: neilb0627 at gmail.com; ac2eu at yahoo.com; arc5 at mailman.qth.net; milsurplus at mailman.qth.net
Subject: Re: [Milsurplus] [ARC5] Homebrew choke

>
But because each capacitor in such a circuit is charged only on alternate half-cycles, with the other supplying the full load, the regulation, and hum, is going to be a lot poorer than it is in the full-wave bridge circuit
>

According to my ARRL Handbooks, the output waveform from a voltage doubler looks the same as the output waveform from bridge or center-tapped fullwave rectifiers.

Wayne
WB4OGM


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