| ??? 11/07/06 15:52 Read: times |
#127489 - it is that as Responding to: ???'s previous message |
I keep saying "I know no engineer that can not design a switching power supply. Outside the power supply makers I know none that can make one work".
I have said that long before we started here to look intensily into it. Everybody and his brother can design a switcher that 'works' but EVERY home-made switcher I have seen have had problems. EMI, efficiency, overheating, missing/non-working catastrophe avoidance, and others. The problem with home-made switchers is not regulation, anybody that can copy an appnote can achieve that. When those here that really know of such started to analyze in depth switcher designs they looked at several 'complete design appnotes' and made them all fail in some way. We have "bent folded and mutilated" the Power Trends modules and have never managed to make one 'kill' the circuits it is driving. Kai, I do not deny the very slim possibility that some member here have developed the know-how required to make a fully functioning fully protected switcher, but there is a wide gap between "ability to design" and "know-how" Thus, if you insist, I will rephrase the statement at the top of my post to "If you do not have years of experience developing switchers and through those years have developed a wealth of 'know-how' stay away from building switchers" Erik |
| Topic | Author | Date |
| Absolute maximum Rating .. | 01/01/70 00:00 | |
| It doesnt really work like that | 01/01/70 00:00 | |
| It can withstand it for exactly 347msec! | 01/01/70 00:00 | |
| It can withstand it for exactly 347msec! | 01/01/70 00:00 | |
| More details needed about your crowbar circuit! | 01/01/70 00:00 | |
| More details needed ......... | 01/01/70 00:00 | |
| Crowbar SCR, trip time of fuse... | 01/01/70 00:00 | |
| a fun story | 01/01/70 00:00 | |
| Yes | 01/01/70 00:00 | |
| oscillate and switch-on and -off | 01/01/70 00:00 | |
| It is protection | 01/01/70 00:00 | |
if overvoltage crowbars | 01/01/70 00:00 | |
| Part Damage from high voltage | 01/01/70 00:00 | |
| what is all this about a crowbar | 01/01/70 00:00 | |
| What is all this about switchers, Erik? | 01/01/70 00:00 | |
| it is that as | 01/01/70 00:00 | |
| stay away from building switchers | 01/01/70 00:00 | |
| no, switch mode power supplies | 01/01/70 00:00 | |
| Yes and no | 01/01/70 00:00 | |
| It heavily depends | 01/01/70 00:00 | |
| POWER SUPLIES | 01/01/70 00:00 | |
| Plinio Babo, why no (protected) e-mail in your pr | 01/01/70 00:00 |