Thanks for the comments! Yes, Paul's single CD47 clock is the only one that I've found with a nice description of how it was built so far. I'll have a deeper look at his design
I thought some about the buckshot Paul used and also the power supply needs and thought it might be a good idea to use a toroidal transformer as both a weight and and easy way to get enough voltage, the combination of a switching power supply and a big wall wart might draw as much power (without having done any calculations) and I'll be moving the weight where it is needed skipping the buck shot. /Martin On Thursday, 21 November 2024 at 04:30:02 UTC+1 Richard Scales wrote: > +1 on the Paul Andrews version. > > - Richard > > > On Wednesday, 20 November 2024 at 18:55:40 UTC Nicholas Stock wrote: > >> Paul did this handsomely... >> >> https://www.nixies.us/clocks/cd47-one-tube-clock/ >> >> Nick >> >> On Tue, Nov 19, 2024 at 8:59 PM Richard Scales <[email protected]> >> wrote: >> >>> ... and if it were my tube I would make sure that whatever kit I used >>> had PIR activation so the tube did not run any longer than it needed to and >>> I would make the B12A socket/adapter board wide with fixings on so that is >>> what held the tube in place, the inexpensive clock part can hang underneath! >>> I also made a glaring omission in that the CD47 would like a much higher >>> anode voltage - 250V min so make sure that whatever kit you use has an HV >>> supply that can be tweaked to that voltage. >>> - Richard >>> >>> >>> On Wednesday, 20 November 2024 at 04:50:43 UTC Richard Scales wrote: >>> >>>> >>>> I see that the cathode current is around 25mA (this will vary depending >>>> on what digit you illuminate) so any kit that uses an HV5xxx driver from >>>> Microchip will work for sure as it can sink 100mA. >>>> Of course you would need to have a special 'socket' for it to match the >>>> tube base. >>>> I have a one-tube clock that uses 74595's coupled to MPSA42's which are >>>> rated at 500mA so they should also be good. >>>> Again, a different tube base but totally do-able. The easiest thing >>>> might be to source a B12A tube socket and then have the driver board of >>>> whatever clock you choose to me modified to accept the B12A socket. >>>> What would be even easier would be to make an adapter board that >>>> plugged into a Z568 Socket which then had the B12A socket on it - super >>>> easy. >>>> That's what I would do. If I got anything wrong about the current >>>> values then please let me know - I am keen to learn - I've never had hands >>>> on one of these tubes to try. >>>> - Richard >>>> >>>> On Tuesday, 19 November 2024 at 17:12:18 UTC Dekatron42 wrote: >>>> >>>>> I just got my hands on my first Rodan CD-47 and wonder if there is any >>>>> 1-digit kit available that will be able to drive this monster Nixie? >>>>> >>>>> I've googled some but only found kits for smaller Nixies. >>>>> >>>>> /Martin >>>>> >>>> -- >>> You received this message because you are subscribed to the Google >>> Groups "neonixie-l" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion, visit >>> https://groups.google.com/d/msgid/neonixie-l/7265c525-74b5-4b5e-a064-a741e60aab55n%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/neonixie-l/7265c525-74b5-4b5e-a064-a741e60aab55n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion, visit https://groups.google.com/d/msgid/neonixie-l/f7f3d53b-8cfe-4ebf-9670-629969465407n%40googlegroups.com.
