Found in 1980s Radio Electronics, this circuit triggers the ignition of a rocket after the countdown is completed. The countdown is monitored by the sequential lighting of LEDs
This circuit was found in an ancient American documentation. The transformer is the type used in...
Found in an Electronic Design from the 90s, this circuit provides outputs according to the input...
This isolated non-synchronized triac and optocoupler circuit was found in the August 1992 issue of...