This two-port configuration of the 4001 was found in the April 1988 issue of Radio Electronics magazine. The timings are given by R1 and C1 as a function of the desired behavior of the circuit.
This filter with the operational 741 passes the frequency range between 300 Hz and 3,400 Hz. This...
Figure bellow shows how the 4088 or 4018 can be used as a touch switch. Two metal plates separated by 1 mm...
This circuit uses one of the first commercial transistors, availble in 1958, year of the...