Hi All, thought I'd try to draw on the groups experience.

I need some heaters to warm some optical elements. A long time ago I
remember seeing some small heaters which were fitted to crystals in radio
gear for temperature stabilisation.  I know this can be done using power
resistors, pwr transistors etc but I am really looking for a compact "made
for the job" solution.
Does anyone know of a manufacturer of these heaters.
best regards
rob

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