Hello Mike,

Thank you that is exactly what I wanted to do :-)

How did you made the A-101 sockets ?



Le vendredi 22 septembre 2023 à 13:59:24 UTC+2, Mike Mitchell a écrit :

> I built a dekatron clock based on https://959radio.co.uk/dekatron.html as 
> shown here:  https://www.youtube.com/watch?v=AeS3xuuRBV4
> There is a link from that video to a dropbox with photos of the build, 
> including a photo of a hand-drawn schematic.
> I used a STQ3N45K3 N-channel Mosfet as an inter-stage coupler instead of a 
> vacuum triode.
>
>
> On Friday, September 22, 2023 at 2:56:11 AM UTC-4 Dekatron42 wrote:
>
>>
>> You can contact the designer of that clock, he answered my questions 
>> manyvyears ago.
>>
>> You can also have a look here: 
>> https://threeneurons.wordpress.com/dekatron-stuff/ for dekatron driving 
>> and explanationd.
>>
>> /Martin
>> On Thursday, 21 September 2023 at 20:18:47 UTC+2 Benoit Tourret wrote:
>>
>>> Good morning,
>>> I'm still with my idea of making a dekatron clock.
>>>
>>> I found some diagrams at http://959radio.co.uk/dekatron.html
>>>
>>> but here is my second question:
>>> in the diagram http://959radio.co.uk/Sec_Counter.pdf there are two 
>>> A-101 dekatrons to divide the frequency of 1 Hz into seconds.
>>> each dekatron will pilot its own nixie tube to display the seconds. it's 
>>> via an MPSA42 transistor. one per used cathode.
>>> the first decatron will increment the second dekatron each time the 
>>> cathode "K0" shines, to increment the tens.
>>>
>>> here we have a vacuum triode, but I want to replace it with a transistor 
>>> or perhaps a thyratron; it's a clock, not central heating...
>>> how would you handle this?
>>>
>>> another question, what is x (marked: To other modules)?
>>>
>>> and while we're at it, can you just explain to me how the transition 
>>> from 59 to 00 works, via I think Q11 and Q17. but how? and why is G2@DEK2 
>>> involved?
>>> And also if there is (as I think) a small error on the DEK2 Bus, which 
>>> should be marked 6 and not 10, and the MPSA42 transistors should be 
>>> numbered from Q12 to Q17.
>>> the compute module for the seconds and minutes being exactly the same, 
>>> we will stop there.
>>>
>>> P.S. If you think to have a better diagram, don't hesitate.
>>>
>>> Regards,
>>> Benoit.
>>>
>>

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