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Re: [Amps] Switching Supplies for High Current Filaments

To: AMPS <amps@contesting.com>
Subject: Re: [Amps] Switching Supplies for High Current Filaments
From: Jim Barber <audioguy@charter.net>
Reply-to: audioguy@charter.net
Date: Tue, 05 Oct 2010 12:49:20 -0700
List-post: <amps@contesting.com">mailto:amps@contesting.com>
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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> REPLY:
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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@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@live.com>  wrote:
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>> Would cold start surge current be a problem for switcher implementation for 
>> filaments
>
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