SWR meter with badly damaged galvanometer.
Meter deflects (what little is left of it!) and appears to be about 30
to 50 micro amps FSD.
Have a replacement galvanometer that fits perfectly but has about one
fifth sensitivity.
The replacement has at least a 250 microamp FSD movement; maybe even
500 micro amps! Intend to do more precise measurement.
But regardless; could one add a small DC amplifier to increase the
current feeding the galvo. and then calibrate it to deflect the meter
correctly?
Aso adding a small battery and battery switch to power the DC
amplifier unit which would only need to be switched on when doing
measurements.
Advice/possible circuit appreciated.
