We found this circuit in a Popular Electronics from December 1957. Its activation is done by a tuned LC circuit that, when approaching the oscillating coil, triggers the circuit.
Electronic lock (T450E)
- Details
- Written by: Newton C. Braga
We found this circuit in a Popular Electronics from December 1957. Its activation is done by a tuned LC circuit that, when approaching the oscillating coil, triggers the circuit.
