Circuit on Simple Proximity Detector or Sensor

This is a simple indicator of proximity to the Group CS209. CS209A is a bipolar integrated circuits attached to metal detection/identification for use at a distance.CS209A contains on the outside next to the connections resistance tank and feedback, 2 and 3, contact, generated by the generator. internal generator runs close to the metal object, a range of frequencies, the district is close to the tank, tank through the amplitude of voltage the inductor will begin to fall slowly. Envelope oscillation when a particular level, the causes of changes States IC output. Potentiometer with pins 1 and 8 must be adapted to the detection distance. The higher the resistance, more mobile. identification may be increased in the region, through the use of high-q, the largest area of broadband. 1-inch well tuned circuit chain, unique in the structure of a given region, to simplify their location (1 inch) in the table, and specify the RF resistance from one of the exits (pin4 or 5) change status.

Circuit Diagram