---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sat 04/21/07: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:21 AM - Re: PM ALTERNATOR AC OUTPUT (Ken) 2. 05:21 AM - Re: Re: Clamp On DC Multimeters... (Ken) ________________________________ Message 1 _____________________________________ Time: 05:21:08 AM PST US From: Ken Subject: Re: AeroElectric-List: PM ALTERNATOR AC OUTPUT Hi Peter I get over a 100 vac from mine like that depending on engine speed. It isn't going to charge at all unless you have something like almost 20vac going into the regulator rectifier. Are you sure you aren't measuring with a DC meter? Yes some of those units will operate with just a large capacitor and no battery but I would hesitate to try that without a load connected unless you know your combination of parts will do that. Ken Peter H wrote: > >Hi,, >I have only 0.2V AC output from the stator of my single phase PM alternator when the battery is disconnected. Is this correct? >Is there any way to get full regulated DC output from a PM alternator if the battery is isolated from it? >Thanks, >Peter H > > > > ________________________________ Message 2 _____________________________________ Time: 05:21:08 AM PST US From: Ken Subject: Re: AeroElectric-List: Re: Clamp On DC Multimeters... For starter current diagnoses, I find that a very cheap automotive store magnetic meter is sufficient. Not very accurate but for a couple of dollars, good enough to detect excessive draw. You just hold it beside the wire and the meter is directly deflected by the magnetism. With $20. ac clamp on meters from China around now, I keep expecting to see a cheap clamp on dc hall effect meter but I haven't seen one yet. Ken jetboy wrote: > >Greg, > You might find a similar one for your needs at Newark / Farnell / Radiospares catalogues. ISO - Tec is a nice small low cost type or go for a Fluke. My one is 400 amps DC Sanwa and works well. If you are going to measure starter currents you will need this range. This is a required item for diagnosing Rotax 912 problems as described in their SB. Clamp meters are very handy for checking current drain and charging systems. A normal DMM with 20A range can do most things but many of the clamp meters include the DMM functions too. > >Ralph > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.