Hello,
As mentioned in one of my previous posts, I'm building a nixie clock with Dalibor's RZ568M tubes.
The idea is to make the base as thin as possible and to achieve that I am using two power supplies, each with a transformer that is about 6mm tall.
If I build a clock with 6 tubes and 2 colons, I can allocate 3 tubes + 1 colon to each power supply and the brightness is nicely balanced.
If I build a clock with 4 tubes and 1 colon divider, then I am not sure if I should allocate 2 tubes + 1 colon to a power supply and 2 tubes only to the other power supply. If I do so, the brightness in the 2 tubes only will be different than in the 2 tubes connected to the colon. I could use PWM to adjust brightness but let's assume that I just do direct drive with no PWM.
I thought, is it possible to put two HVPS in parallel as you'd do with the batteries to increase overall current for a higher load? I don't think that's possible with DC/DC boost converters as it messes up the voltage on the top resistor of the voltage divider/feedback loop. I can always try and experiment but wanted to hear any suggestions before frying two power supplies.
I have built a larger power supply that can take all 6 Nixies etc but the transformer is much taller of course, so I am not using that one.
I could add a third mini power supply just for the colon, but it seems overkill to have 3 power supplies!
Any thoughts?
Thanks, as always.
Max