[time-nuts] R&S XSRM Rubidium

[Bob Camp]

Hi

Neon bulbs do the same thing. The ignition voltage is light sensitive. If you see a place they are being used as a voltage reference, they get painted black.

Bob


On Jan 22, 2011, at 6:02 PM, WB6BNQ wrote:

> Paul,
> 
> The LED thing is interesting.  Are you sure you were not just seeing a reflection
> of some sort ?
> 
> Bill....WB6BNQ
> 
> paul swed wrote:
> 
>> Other thing, measuring ignition time. On the first run just for the heck of
>> it I flashed a led light into the ampule and it ignited instantly. So
>> perhaps for old hard starting end of life RB lamps this might be a trick to
>> at least get it going for a bit longer.
> 
> 
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