Scale illumination lamps blown. Anyone ever tried droppered blue or white LEDs for such purposes. Would probably require a reflector on the LED lighting axis to throw light off radially.
-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on
Or you could use SMD type that give light of the top. They would be small enough to fit the right way round in the space used by a #67 bulb commonly used for the grid illumination.
- Tim -
Yes - but you have both the colour problem (nasty hues) and the fact they tend to be a near point source as opposed to the tubular tungsten ones normally used. I got fed up of constantly replacing those on a series of PPMs and fitted small fluorescents. Of course this wouldn't be practical on most domestic meters.
How about red or orange or green, yellow ?
An idea from IRLEDs which are available with wide angle radiation pattern - and have virtually flat lens instead of domed, you could flatten the end of some white LEDs (taking care not to cut too deep and take out the bond wire!) using a medium rough emery paper will leave a diffuser lens end.
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