Found in an Electronic Design of 1964, this circuit can control up to 20 SCRs in a trigger system powered by 24 V. The SCR supports a modern equivalent.
Found in Popular Electronics this circuit will trigger a buzzer if the ignition key is removed...
Found in Popular Electronics, this sophisticated short-wave receiver requires a lot of skill from...
This circuit is from an old American documentation using LEDs in the rectification. The circuit...