This circuit is from a Texas Instruments manual from 1968 but can be applied to current controls using modern Triacs. The circuit is for a current of 25 A per triac.
This circuit was found in a 1995 documentation. It drives a set of sequential LEDs from the sound...
This transmitter circuit for the 11-meter range was found in a 1990s spy book. The circuit...
These basic filters, the second one being operational, were published in the November 1973 issue of...