All Questions
5 questions
4
votes
2
answers
437
views
compensation for flyback regulator with 431 and optocoupler
I am testing a flyback converter with secondary side regulation, by means of a 431 in conjunction with an optocoupler with nominal CTR of 50-100%. A snippet of the regulator part is below.
I have used ...
- 23.4k
1
vote
1
answer
241
views
SMPS transformer secondary voltage cross-regulation
Please see the simple SMPS flyback circuit below (24V to 12V):
Notice the load on the 'first' secondary coil is about 100mA (marked fb). This coil is used as the ...
- 309
0
votes
0
answers
55
views
SMPS topology for combination of current controlled rail and fixed voltage rail
I'm looking at designing a LED driving power supply that can interface with a universal AC main input (~90VAC-260VAC) and produce 2 rails at the output; one a current controlled rail, and the other a ...
- 161
6
votes
1
answer
1k
views
How to safely generate 200V from low voltage supply
Unfortunately, this post requires quite a bit of background if it's going to be useful to anybody (including me).
I have been trying to build a relatively high voltage power converter for part of my ...
- 131
0
votes
2
answers
355
views
Low noise voltage regulation
I have a circuit which currently runs off of either a 12VDC wall wart adapter, or it falls back to a 9V battery if the wall wart adapter is not connected. My circuit currently uses a chip which ...
- 830