this is a circuit diagram of a two way counter. http://www.scribd.com/doc/13394345/shankarnitian.
COULD SOME ONE PLEASE EXPLAIN WHY A BATTERY AND A CAPACITOR HAS TO BE USED AFTER THE BRIDGE RECTIFIER IN THE POWER SUPPLY CIRCUIT?
COULD SOME ONE PLEASE EXPLAIN WHY A BATTERY AND A CAPACITOR HAS TO BE USED AFTER THE BRIDGE RECTIFIER IN THE POWER SUPPLY CIRCUIT?