[Amps] Switching Supplies for High Current Filaments

[Jim Barber]

That's an intriguing question, but I wonder about harmonics of that 
sharp-ish waveform flying around the RF deck?

73,
Jim N7CXI

On 10/5/2010 12:33 PM, Paul Decker wrote:
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> What if instead of DC, the square wave (triangle or whatever) from the switchers transformer were used?
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> Date: Tue, 05 Oct 2010 09:18:09 -0700
> From: "Bill, W6WRT"<  dezrat1242 at yahoo.com>
> Subject: Re: [Amps] Switching Supplies for High Current Filaments
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>> Another problem is using DC on a filament-type tube such
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> ORIGINAL MESSAGE:
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> On Tue, 5 Oct 2010 07:34:41 -0700, Patrick Barthelow
> <apolloeme at live.com>  wrote:
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>> Would cold start surge current be a problem for switcher implementation for filaments
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