> I have an exceedingly cheap and cheerful petrol motor powered > alternator rated at about 700 watts max. (Cost about $US65 new). > > Voltage stability at constant load is "OK" but if you > step-change the load it surges extremely badly. The old school solution is a Big flywheel. --- James. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist