[volt-nuts] HP 419 & Fluke 845
Dr. Frank Stellmach
drfrank.stellmach at freenet.de
Thu Mar 25 21:50:56 UTC 2010
On those units, the opto chopper, i.e. the neon bulbs were the crucial
parts, always.
I suggest trying to replace the neons by LEDs, assuming neons are also
red emitters.
Their very low leakage currents (not specified) perhaps rely on the CdS
switches.
So a replacement by a 7650 would be sufficient, but perhaps worsen
parasitic currents.
Frank
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