[Amps] filament instant heating query / simple remedy

[Jim Hargrave]

Four....One to hold the lamp and three to rotate the amplifier. Boatanchors
are heavy you know.

    73s de Jim
       W5IFP


  > -----Original Message-----
  > From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com]On
  > Behalf Of Carl
  > Sent: Tuesday, June 19, 2012 8:05 AM
  > To: Gudguyham at aol.com
  > Cc: amps at contesting.com
  > Subject: Re: [Amps] filament instant heating query / simple remedy
  >
  >
  > 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
  > >>
  > >>
  > >>
  > >>
  > >>_______________________________________________
  > >>Amps  mailing  list
  > >>Amps at contesting.com
  > >>http://lists.contesting.com/mailman/listinfo/amps
  > >
  > > _______________________________________________
  > > Amps  mailing  list
  > > Amps at contesting.com
  > > http://lists.contesting.com/mailman/listinfo/amps
  > >
  > > _______________________________________________
  > > Amps mailing list
  > > Amps at contesting.com
  > > http://lists.contesting.com/mailman/listinfo/amps
  > >
  > >
  > > -----
  > > No virus found in this message.
  > > Checked by AVG - www.avg.com
  > > Version: 10.0.1424 / Virus Database: 2433/5078 - Release
  > Date: 06/18/12
  > >
  >
  > _______________________________________________
  > Amps mailing list
  > Amps at contesting.com
  > http://lists.contesting.com/mailman/listinfo/amps