Sunday, February 28, 2016

Circuit Schematic Proximity Detector using CS209A IC

Eltronicschool. - There are many circuit schematic designed using proximity detector now. To use proximity detector, you must know special circuit schematic that can result this detector. And one circuit for proximity detector is using CS209A IC like in Figure 1 below.



In here we will give you describe of Circuit Schematic Proximity Detector using CS209A IC. And the last we will give you link to you to read more this circuit and description from original source.

Circuit schematic

Component Parts
  1. CS209A IC
  2. Relay
  3. Diode
  4. Capacitors
  5. Resistor
  6. Inductor
Description

Circuit schematic like in figure 1 above is Circuit Schematic Proximity Detector using CS209A IC. According Circuitstoday site describe that this is a simple proximity detector using IC CS209. The CS209A is a bipolar monolithic integrated circuit for use in metal detection/proximity sensing applications.The CS209A contains an oscillator set up by an external parallel resonant tank and a feedback resistor connected between pin 2 & 3 .

The internal oscillator operates close to the resonant frequency of the tank circuit.As a metal object is brought close to the inductor, the amplitude of the voltage across the tank gradually begins to drop. When the envelope of the oscillation reaches a certain level, the IC causes the outputs to toggle states.potentiometer connected between pin 1 & 8 is adjusted to achieve a certain detection distance range. 

The larger the resistance the greater the trip-point distance.Detection range can be increased by using a high Q coil.Maximum possible range is 1 inch with a  well tuned  circuit.Only difficulty in making this  circuit is the tuning up the circuit to a particular range.For making it easy place a metal piece at the desired distance from coil (with in 1 inch) and adjust resistance Rf to make one of the outputs (  pin4 or 5) to change state..

And for more your information about Circuit Schematic Proximity Detector using CS209A IC you can read it fully from original source using link here.


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