[Test-Equipment] HP 403B pegging meters

[k4pf at juno.com]

Hi,

I'm glad to hear that HP meters can stand such an overload,
but I can report that not all good quality panel meters 
can survive.

I once connected my Triplett model 666HH VOM (1K Ohm/Volt, about 1950
vintage) across 125VAC when the meter was set to the 50VAC scale.
The meter coil survived, but I had to do surgery on the meter
to straighten out the bent indicator.

73,
Ed Knobloch


-- w8au at sssnet.com wrote:
>As pointed out in earlier postings, this is not a problem.  The meters will
withstand 1000% overload without damage (even though to our eyes it looks
abnormal).   In that you've shown that the surge is 400%, this is well within
the normal safety specs for the meters.

"Don't worry, Be Happy!"  as the song goes...  :-)

Perry   w8au