Tending to think you're right about the load the IN-18s present vs. the other tubes since both of those smaller tube clocks have run for years without an issue. And this last go round I did replace all the electrolytics with Xicon caps and actually used a 350V vs. the required 250V for the HV cap. The inductor was a Bourne and I replaced it with same. Time will tell, I guess.
On Friday, September 2, 2016 at 7:58:49 AM UTC-7, gregebert wrote: > > Most likely, the IN-18's are using more current than the supply was > designed for. Switching power supplies work great with zero or minimal > loading, but once you start cranking more current thru them all sorts of > problems can arise. I've found this out the hard way several times. > > Look for signs of trouble, such as overheating (especially in the inductor > from saturation), excess ripple voltage on the cap, voltage spikes on the > MOSFET, duty-cycle (longer MOSFET "on" time will cause more current in > inductor & MOSFET). > -- 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 post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/c16e2d07-6e83-43d9-833b-2db0c4ac1745%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
