[Elecraft] Transistor for increasing Amp relay speed

[Floyd Sense]

Guess I wasn't very clear.  Already knew precisely what current the =
relay draws.  The unknown was the current handling capability of the =
transistor.  Contrary to my muddled comments, I actually know what I'm =
doing!

K8AC
  ----- Original Message -----=20
  From: Lee Buller=20
  To: Floyd Sense=20
  Cc: Elecraft Reflector=20
  Sent: Wednesday, January 21, 2004 2:25 PM
  Subject: Re: [Elecraft] Transistor for increasing Amp relay speed


  So, you need to know how much the relay draws?  Easy.  Turn the amp =
on.  Unhook the RF input just for grins.  Place your MultiMeter on the =
current range.  Clip the negative lead to the hot lead of the relay ... =
usually a RCA phone plug....the center pin.  Hook a alligator clip from =
the outside of the RCA phono plug to the negative side of a 12 volt =
power supply.  Turn the amp to Operate (not Standby).  Touch the RED =
lead from the MultiMeter to the positive side of the 12 volts power =
supply.  Read the current.  Done.

  Or, look in the manual of the amp and it might be documented.

  Lee - K0WA


  Floyd Sense <sentek@sprintmail.com> wrote:
    Well, when I went scrounging in the junk box, I found a few 2N2222s =
and one
    of them worked just fine. I've got it installed and at least it =
"sounds"
    faster. The 2N2222 will handle up to 800ma. of collector current, so =
I'd
    guess most if not all 12V amplifier antenna relays would fall into =
that
    range.

    K8AC




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