[Test-Equipment] HP-8620C

[J. Forster]

In this case, unless there is a commercially made exact replacement, it
would be very difficult. The lamps are an integral part of the knob
assembly.

-John



>> HI-the tiny lamps used by HP may be the  HP p/n 2140-0092,  the industry
>> no is  685. Expensive little things,
>
>> 5v with a 40,00 hr life?
>
>> Newark was about $2.50 each, I have a few here but could spare only 2.
>
>    I don't know the equipment, but replacing them with high efficiency
> LEDS may be possible and that would probably be the last time you
> have to do it.
>    I put 3 green LEDs in series (arraigned in a tight triangle) with a
> 1 k Ohm resistor on 14 Volts replacing a #51 lamp regularly in HAM
> equipment (for use in a car) and the results are brighter and with much
> better color than the original optical filters with the incandescent
> lamp.  5 Volts on one LED with about 470 Ohms.  You could use surface
> mount types.
> --
>     Ron  KA4INM - Surprise your boss.  Get to work on time.
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