Nixie Clock Ver 2.0 - Page 1
Forum section: electronics / beginners

author: Aztlanpz
author_rank: Regular Contributor
timestamp: July 17, 2017, 10:49:09 am
content: I have updated my design for a Nixie clock; will this work.Thank you

author: NivagSwerdna
author_rank: Super Contributor
timestamp: July 17, 2017, 11:05:14 am
content: Looks quite like...https://neon1.net/nixieclock/photos/main_circuit.pngso I would vote for(But I'm still a HV5812 or HV5622 fan boy myself)

author: mauroh
author_rank: Frequent Contributor
timestamp: July 17, 2017, 01:08:43 pm
content: Nixie Noob here:Is it possible to multiplex nixies using only one 74141N and multiplexing the anodes?It seems this solution is always deprecated but I don't know why.ThanksMauro

author: mauroh
author_rank: Frequent Contributor
timestamp: July 17, 2017, 01:19:17 pm
content: Well I think someone like the multiplex solution, but I suspect it can have some cons since is not used very oftenhttp://evertdekker.com/?p=81Mauro

author: NivagSwerdna
author_rank: Super Contributor
timestamp: July 17, 2017, 01:45:21 pm
content: Quote from: mauroh on July 17, 2017, 01:08:43 pmYESYou need more current but each element is on for no more than 50% of the time (actually slightly less since there should be a short OFF period as you switch digits).There is not enough evidence to determine if this is a good idea or not... static is easier software wise.Personally I do multiplex as I wanted to drive all digits and also the left and right decimals in six tubes... that's quite a lot of driving.The principles are equally applicable to 74141N et al.When I was starting out I came across this thread...http://www.avrfreaks.net/forum/tut-hard-soft-how-build-nixie-clock?page=alland the associated schematichttp://www.avrfreaks.net/sites/default/files/schematic%201.pdf. It's not exactly the same as I ended up with but there is quite a lot of wisdom in there and it makes good background bedtime reading.PSShameless plug for my solution....https://www.eevblog.com/forum/projects/hv5812-driving-nixies/msg1035008/#msg1035008PPSDon't forget Dave's Nixie Subscriber indicator project... it offers another solution using easily obtainable parts.

author: mauroh
author_rank: Frequent Contributor
timestamp: July 17, 2017, 02:01:05 pm
content: Thank you so much!!That thread is so informative and it will be nice to read it on the beach...I like the implementation of the SMPS using the MCU, again not something really common in this nixie clocks where everyone (me too) prefer to use a third party moduleMauro

author: NivagSwerdna
author_rank: Super Contributor
timestamp: July 17, 2017, 02:10:19 pm
content: Quote from: mauroh on July 17, 2017, 02:01:05 pmIndeed, But in the end I went with a design very close tohttps://threeneurons.wordpress.com/nixie-power-supply/for simplicity... I think Dave also used this solution... but YMMV.FWIW I also boughteBay auction: #262524352761whilst I was in the tinkering phase, it's really nicely made and reasonably cheap. (I have no connection to the vendor)

author: mauroh
author_rank: Frequent Contributor
timestamp: July 17, 2017, 02:31:06 pm
content: I preferred the NE555 one just because I have a ton of iteven though is not the most efficient:http://dangerousprototypes.com/blog/2012/09/12/testing-the-efficiency-of-hv-smps-used-for-driving-nixies/Mauro

author: NivagSwerdna
author_rank: Super Contributor
timestamp: July 17, 2017, 02:34:57 pm
content: Quote from: mauroh on July 17, 2017, 02:31:06 pm