Datasheets


N° of component 

CMOS Digital Timer from 0 to 99 Minutes (CB1272E )

    The circuit is from an old American magazine EDN of 1975, but can be mounted with ease with common cathode displays. The circuit is programmed by BCD switches and powered by 5V voltages. The accuracy depends on the setting of the oscillator with the 4011.

 


 

 

 


Circuit Bench