Based on a PLL 567, this circuit serves as a receiver for the CB9574E circuit. S tuning is done in R1 and it is used for frequency modulated signals.
Found in a 1965 Electronic Design, this circuit limits surges in a load when power is applied. The...
This instrumentation circuit was found in the September 1989 issue of Radio Electronics magazine....
In the original publication of the 90s a 556 consisting of a double 555 is suggested. The circuit...