We found this circuit in the February 1984 issue of Radio Electronics magazine. It uses an integrated circuit from the time and uses an LED as an indicator. It is powered by a 9 V battery.
Metal Sensor (CB24787E)
- Details
- Written by: Newton C. Braga
We found this circuit in the February 1984 issue of Radio Electronics magazine. It uses an integrated circuit from the time and uses an LED as an indicator. It is powered by a 9 V battery.
