[Amps] Glitch Resistor

[Doug Renwick]

Some Emtron amps use 4 or 5 or 6 x 100 ohm 15 watt resistors in
parallel.

Doug

Life is not a spectator sport. 

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com]
On Behalf Of David Craig
Sent: February 2, 2009 10:53 AM
To: Bob Maser; AMPS
Subject: Re: [Amps] Glitch Resistor

    Just curious (and yes I have read Orr et al)- Why is 50 ohms the 
(supposed) target value for glitch?  I use a pair of 25 ohm 50w in
parallel 
on one GS35b amp, and my latest one uses a single 10 ohm 110w Ohmite.
No 
flashovers in either (well, the first one did before I discovered the
need 
for glitch protection, hi).  I understand the higher the R the lower the

current surge during a glitch but 50 ohms still seems a bit high to me.
    Re the 30 AWG I recall that was essentially a HV fuse- 1" or so of
wire 
between insulators that would "blow" during a surge.  That said, is
there 
any real advantage of using a fuse as opposed to a resistor, assuming 
arguendo there isn't a catastrophic short in the tube?

73 Dave N3DB

----- Original Message ----- 
From: "Bob Maser" <bmaser at tampabay.rr.com>
To: "AMPS" <amps at contesting.com>
Sent: Sunday, February 01, 2009 10:58 PM
Subject: [Amps] Glitch Resistor


> I'm having a hard time finding a 50 ohm 50W resistor for a glitch
resistor
> for my 4CX1500B amp.  Seems I remember that I could also use some AWG
30 
> for
> a glitch.  Can someone enlighten me?
> Bob W6TR
>
> _______________________________________________
> 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