BTW, assuming you want to build it from scratch, how many IO pins will be necessary for a 7 seg clock displaying: dd:mm:yyyy hh:mm:ss:tt totaly16 digit where the format displayed is day:month:year hour:minute:second:milisecond Vasile On 11/9/09, Carl Denk wrote: > OK, thanks again. It's a little hard to power up out of the appliance, > but, think that can happen. Should be able to get to it tomorrow, and > will report back. > > Dwayne Reid wrote: > > At 02:57 PM 11/9/2009, Carl Denk wrote: > > > >> Probably I can check the resistance of the transformer windings. I'm > >> pretty sure it's center > >> tapped, then the resistance of both sides should be close. :) > >> > > > > Not necessarily. > > > > The resistance will be similar if the windings were done > > bifilar-style. They can be significantly different if they are done > > as one winding on top of the other - the outer winding uses more wire > > and therefore has a higher resistance. > > > > Your better bet is to measure the voltage from center-tap to each end > > of the winding while under load. > > > > dwayne > > > > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist