[Top] [All Lists]

[AMPS] SB-1000 mods?

To: <>
Subject: [AMPS] SB-1000 mods?
From: (Tom Rauch)
Date: Sat, 8 Sep 2001 15:35:07 -0400
> glitch resistor? I have some 25 ohm/25 watt Dale RER type metal body
> resistors, but I am concerned that they might be prone to flash over
> due to the relatively small gap between the leads and the metal case.
> Presumeably a ceramic body wire wound resistor is the way to go.
> Should I be concerned about inductance (L*di/dt kick) - some
> wirewounds seem to be classified as "non-inductive" whereas some
> aren't?

The resistor must be surge rated for the voltage across the resistor 
and the peak energy.

RCD makes xxx-P series pulse rated resistors, or you can use a 
"glow-bar" type. The RCD pulse rated resistor barely costs more 
than a conventional wire wound resistor.

It makes no difference at all if it is inductive, because the 
inductance will be negligible. Many non-inductive wire wound 
resistors have a lower than normal voltage rating (from lead to 
lead), because of the winding method.

The metal case resistor won't work well.


73, Tom W8JI 

FAQ on WWW:     
Administrative requests:

<Prev in Thread] Current Thread [Next in Thread>