[time-nuts] R&S XSRM Rubidium
lists at rtty.us
Sat Jan 22 23:05:08 UTC 2011
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.
On Jan 22, 2011, at 6:02 PM, WB6BNQ wrote:
> The LED thing is interesting. Are you sure you were not just seeing a reflection
> of some sort ?
> 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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