Jeff;
It may also be possible your slug blew it's detector diode.
The current through the meter movement is only1.4 times the current (at 1
kw) vs. 500W.
If you move the slug to point directly up (not connecting), it will short
the meter input.
Thus, the meter vain will exhibit a damped response vs. what it would
indicate with slug out of meter.
If you see this, then the meter movement is likely undamaged.
Should it be the meter movement, they are available separately and you don't
have to do any calibration, just replace.
Merit
> K7XQ wrote:
>
> >Hello All,
> > I think I made a mistake yesterday during the EME Contest. I
> >accidentally
> >left a 500 watt slug in the meter and keyed the power meter with over
> >1 kW and I think I blew out the meter. I tried acouple more slugs
> >and no movement of the meter is no longer found.
> >
> >
> >
> I wonder if that's likely to have blown the meter. The meter fsd is
> 30uA, the extra power will probably result in a current about twice that
> - I can't imagine 60uA burning a meter movement out. Maybe repeated
> hammering on the end stop might damage something, but it has to be worth
> checking the movement. A 1.5V battery and 100k resistor should give
> about 50% reading. -ve is the chassis and you can pick up the +ve on the
> connector tag where the slug plugs in, or pop the back off and go to the
> meter terminals directly.
>
> Steve
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|