I'm currently building my permanent power supply unit, fitting the transformers and variac into a case with metering and safety interlocks on the doors and I'm at the stage of deciding what filtering to use on the bridge rectified DC output. Do I need any serious form of filtering? I'd like to avoid a 50KV oil filled homemade capacitor If I possibly can from a safety point of view, not to mention vapourising grids with sudden flashovers. I'd like to know if straight inductive filtering is feasible to take some of the bumps out of the 100Hz (rectified 50Hz) output. Time to reach for the ARRL handbooks I think.
Regards
Mark Harriss
Do I need filtering?
-
Richard Hull
- Moderator
- Posts: 15024
- Joined: Fri Jun 15, 2001 9:44 am
- Real name: Richard Hull
Re: Do I need filtering?
I no longer use filtering on my system. I was actually creating false counts as the thing broke into a relaxation mode oscillation. Usually, this happened just as real fusion voltages were reached.
If you opt for filtering, figure on about 15ma draw in operation. Most of the time a .01ufd is enough.
Richard Hull
If you opt for filtering, figure on about 15ma draw in operation. Most of the time a .01ufd is enough.
Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
The more complex the idea put forward by the poor amateur, the more likely it will never see embodiment
Fusion is the energy of the future....and it always will be
The more complex the idea put forward by the poor amateur, the more likely it will never see embodiment