??? 02/13/07 00:23 Read: times |
#132701 - Rob is right Responding to: ???'s previous message |
Erik said:
Re the electrolytics, I do not see the need for particular "low ohmic electrolytics" (no I do not advocate ignorance, just I think the need is less dramatic than Kai states) because the 100nF parallels will supply the bursts whicle the "ohmic sluggishness" of the electrolytics is overcome. With a switcher running at 100kHz the electrolytic's ESR (equivalent series resistance) indeed is the crucial factor when planning to decrease the ripple. Only the very best electrolytic must be used in such a circuit. Kai |