What are the ESCs?
5.5V is fine to operate at.Using a high current diode, like 1A rated 1N4001 wouldn't hurt to get you down to ~4.8VOr a Schottky diode with 0.3V or 0.4V rating.
Quote from: CrossRoads on Jan 11, 2013, 10:21 pm5.5V is fine to operate at.Using a high current diode, like 1A rated 1N4001 wouldn't hurt to get you down to ~4.8VOr a Schottky diode with 0.3V or 0.4V rating.I know that a diode needs that 0.7V to "turn on" so to speak. Excuse my ignorance here, but am I right in thinking that this approach to voltage regulation relies on that 0.7v being dropped across the diode?It would not be consider 'voltage regulation' but rather just a constant voltage drop at whatever the source voltage provided (but of course higher then Vf rating of the diode) and load current draw might be. You just have to make sure your maximum circuit current draw is less then the maximum forward current rating of the diode, and there are diodes available for most any current requirement you might need. The 1N400x series is rated at 1 amp max continuous current. (That said, I tested a 1N400x just yesterday with my new Fluke which has a diode test position, and it indicated a voltage closer to 0.5 than 0.7... or is that diode test testing yet another characteristic of a diode?)The Vf value is a pretty 'loose' spec and will vary from batch to batch and will vary with temperature and to some small effect by the amount of current flowing through the diode. Most silicon diodes will be somewhere in the .5 to .7 range, and germanium and Shockley diodes with have a lower Vf value.
Thanks Lefty... yep I was going to put regulation in quotes for that reason....Now that I have a nice meter that measures current, I can use it in conjunction with my old one to set up a little experiment to measure the simultaneous currents through and voltage drops across (eg) LEDs and resistors in series and verify all this stuff I read about!