[neonixie-l] Re: MAX1771 PSU instability (solved)

2012-02-01 Thread misty01a
I have never used a potentiometer in my MAX1771-based supplies. The reason is, they make it more difficult to do a better PCB layout, and anyway the regulated output voltage from the supply using fixed 1 % resistors is accurate enough for the purpose of powering a Nixie display. I could always

[neonixie-l] Re: MAX1771 PSU instability (solved)

2012-01-23 Thread misty01a
Hello. In my high current MAX1771 PSU design I made several years ago, the best results I got when I used a toroidal inductor with a current rating of 10.3 A (Bourns 2200LL-470-RC), and a RSENSE peak current setting of 5.33 A. I tried other inductors, including a physically smaller 2100LL series