-----Original Message----- From: peter paul fenske <ffnsp955 at bcit.bc.ca> Subject: Re: O-scope reading >is called a non linear resistor. >tungsten light bulb bad idea > >later:all petered out > >Use a current limit resistor and a led. WILL DO, thanks...... Thanks again Bruce > > Just curious if having a hot filament >>adds something to the mix. >>Cheers >>Bruce >>