This comparator circuit was found in the May 1988 Radio Electronics magazine; The power supply does not need to be symmetrical.
January 2017 - The new MAX14001 and MAX14002 analog to digital converters from Maxim can now be...
Found in a Popular Electronics from the 90s, this circuit uses a double 555 to emit beeps when the...
The figure shows how to divide the frequency of a signal by 17 using the 4017. Additional CMOS...