For use on battery current (DC with AC ripple, never going below 0), there is no need for a RMS meter. The reason many meters don't measure PWM correctly is frequency response, not the fact that they do not measure RMS. An RMS meter with poor high frequency response will have the same problem.
David (EV wannabe) ----- Original Message ----- From: "Lee Hart" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, October 11, 2002 12:00 PM Subject: Re: Sparrow Ammeter > Lin Tse Hsu wrote: > > This is not true. It is true that an analog meter will not read > > accurately, but it is correct at 50%! > > What you actually care about for batteries is average current. An analog > meter, and most inexpensive digital meters, will give you an accurate > average voltage or current reading. > > When you want to measure current or voltage for some other purpose, like > heating effects in wiring or true power, then an RMS-reading meter is > the correct choice. > -- > Lee A. Hart Ring the bells that still can ring > 814 8th Ave. N. Forget your perfect offering > Sartell, MN 56377 USA There is a crack in everything > leeahart_at_earthlink.net That's how the light gets in - Leonard Cohen >
