> Chuck wrote: > >> A lot of solid-state equipment such as GPS receivers may not draw much >> power in normal operation. But, at initial power-up it can draw >> substantial surges. This is called "In-Rush Surge." It's caused >> primarily by charging the device's main capacitors. It's become more of >> a problem in recent years as capacitors have improved and have lower >> internal series resistances. The other option is a capacitor placed near the receiver. 10,000mFds at 35V, for example, placed near the receiver would dramatically reduce the amount of in-rush surge seen by the boat's electrical system. >> >> Chuck >> >> >> > > > Capt. Mike Maurice > Tualatin(Portland), Oregon. > Do you really mean a 10 000 milliFarad (mFd) capacitor which works out to 10 Farads and is very big, or do you mean a 10 000 microFarad (uFd) capacitor. I may be nit picking but I believe in using the proper metric prefixes and not old symbols from the English speaking world. I know that u is not the proper prefix for micro but it is used when you can't type the proper Greek letter. Robert Wightman Midnight Sun va3ilw@rac.ca