Should I use FREDs instead of plain diodes like the 1n400X series in the power supply?
For what is close to the last word on snubbers read this: http://www.hagtech.com/pdf/snubber.pdf Quick summary – capacitors alone are not the best answer – a series resisotor/capacitor in parallel with the diode is vastly better. But finding the right values isn’t trivial and depends in part upon the power transformer’s leakage inductance. -Francis Vaughan +1 on everything Francis said. IMO, getting a snubber to REALLY work optimally is tough. If someone tries, do they have a good scope and know how to delay trigger it and know exactly where and when to look in the rectification cycle? If not, then they are guessing. The lazy cap only can actually make things worse (its rare, but it can happen). One size does not fit all. IMO instead of guessing with an attempted snubber design, try this Use a Soft Recovery Ultra Fast Rectifier like the UF5408 instead of the 1N4007, and then keep that first high current pulse circuit loop small and the heck away from sensitive high impedance nodes. UF5
Related Questions
- If we need a 24V output power supply, but Meanwell does not have this model, can we use two 12V power supplies connecting in series instead of one 24V power supply?
- My motherboard has a 24-pin ATX connector. Will a 20-pin ATX power supply (such as the picoPSU series, PW-200 series and M2-ATX) work with it?
- Should I use FREDs instead of plain diodes like the 1n400X series in the power supply?
