MightyOhm.com

Thanks for the prompt reply. I'm using an FJN3303 as Q1, which I think is the same as what your parts list specified. In looking over some of the other posts, I'm beginning to wonder if the problem is that I'm not measuring the actual voltage due to input impedance limitations on my DVM. I hadn't re...

Can you tall me he make and part number for the L1 inductor used in your Geiger Counter kit? I've been experimenting with switching power supplies and I tried to replicate the one used in your Geiger Counter kit for used as a small CRT power power supply. I suspect I'll need a design with more power...