[time-nuts] HP5532A for free
Dr Bruce Griffiths
bruce.griffiths at xtra.co.nz
Tue Jul 17 23:26:27 EDT 2007
SAIDJACK at aol.com wrote:
> In a message dated 7/17/2007 19:12:15 Pacific Daylight Time,
> magnus at rubidium.dyndns.org writes:
>> My old HP 523C does not have Nixie-tubes, such modern shit. No, it uses
>> neon lamps which light up a little display of 0-9. :)
>> I only have a 5-digit one, but there are others that had 6 digits.
> I have an old Nixie tube desktop calculator somewhere, it uses diodes as the
> active calculating elements. DCL they called it I think. Wow. It's got some
> 6 digit precision if I remember correctly.
> I can see a blue glow inside some of the Nixie tubes, I am sure those tubes
> generate IR, X-ray and all sorts of other stuff that makes the mice die around
> the house...
The operating voltage isn't high enough to generate X-rays.
There may be a slight amount of IR from neon however.
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