[Amps] filament instant heating query / simple remedy

[Carl]

Some of these rather silly ideas makes me wonder how many hams does it take 
to replace a pilot light?

Carl
KM1H


----- Original Message ----- 
From: <Gudguyham at aol.com>
To: <wlfuqu00 at uky.edu>; <jerry at tr2.com>; <jimw7ry at gmail.com>
Cc: <gm3sek at ifwtech.co.uk>; <amps at contesting.com>
Sent: Sunday, June 17, 2012 11:26 AM
Subject: Re: [Amps] filament instant heating query / simple remedy


> Hey Bill I got an idea, it's simple and probably the best way to go.
> Using a small 5A variac connected to a 1RPM mini motor with a stop 
> connected to
> the rotation angle where the filament voltage is exactly 5v for a 3-500z.
> When you turn the switch on the motor slowly ramps up the line voltage in
> one  minute to the perfect 5v mark and shuts off.  This does 2 things, it
> slowly  ramps up the filament voltage to avoid transients and also sets 
> the
> perfect  voltage as well.
>
>
> In a message dated 6/17/2012 11:19:09 A.M. Eastern Daylight Time,
> wlfuqu00 at uky.edu writes:
>
> KISS.  Keep It Simple S*****.
> 73
> Bill wa4lav
>
>
> At 09:39 AM 6/17/2012  -0700, Jerry Kaidor wrote:
>
>> >
>> > Just put a resistor  in line switched with a relay!  This is not rocket
>> >  science!
>> >
>>*** Nowadays, a PIC and associated circuitry  might be cheaper than a
>>resistor and a relay.  Amazing times we  live in.  And yeah, it does get 
>>to
>>the point where you're just  playing with technology.  But isn't fun the
>>name of the  game?
>>
>>                 - Jerry  Kaidor
>>
>>
>>
>>
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>
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