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Trying presence detection circuit

Simple circuit to detect people. The output voltage is between 0V and 4V. Useful for several applications.  
 
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naocapitao (1 year ago) Show Hide
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it seems nice. where can i get the schematics?


pareceme bien. donde se puede sacar el dibujo?!
0verclock (3 years ago) Show Hide
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si ni que lo diga en catalán no lo vas a entender! jaja xD
Menguillo (3 years ago) Show Hide
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Overclock, quieres hablar que todos te entendamos, por favor?? Es a dir: en CATALA!!
0verclock (3 years ago) Show Hide
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it's very simple, the circuit uses two tipical BC transistors to amplify the signal, and the sensor is a cable connected to the base of the first transistor.
ichwil (3 years ago) Show Hide
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the tension is prortionat at distance, grat gain
Aitopes (3 years ago) Show Hide
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Schematics available?

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