[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  
>>     
> pure
>   
>> 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...
>  
> bye,
> Said
>
>   
Said

The operating voltage isn't high enough to generate X-rays.
There may be a slight amount of IR from neon however.

Bruce




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