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.
This micropower inverter serves to obtain high voltages with very low current from direct current...
Found in a 1960s documentation, this circuit uses a transistor to drive a relay as well as a set...
This LED light effects circuit is from 1988, but uses common components nowadays. The LEDs are...