This circuit can be used as a lockable shield. A pulse activates the relay that remains on even after the pulse disappears. The transistor is general purpose.
Found in a 90s EDN, this circuit makes use of period components. The maximum current depends on the...
The duration of the output pulse in this circuit depends on C. This capacitor can have values in...
This very simple circuit with neon lamps indicates who pressed the button first, lighting the...