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Electromagnetic Sensor Using a 741

2014-11-10 12:37  
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Circuit diagram is a schematic design for the sensor to the electromagnetic field. This circuit is controlled by IC 741.  IC is a type of IC op-amp. In the circuit diagram that can detect even hidden field wrings. Circuit diagram is working 1mH inductor current sensing is used for electric field. Small electric field will cause the voltage on the inductor and the induced voltage sensor is amplified by op amp. Headphones are connected to the output of op amp audio akan an indication of electrical field. For example, the electric field around the main transformer can be heard as 50 Hz hum. R4 POT that can be used to adjust the gain of the amplifier. By maintaining the sensor inductor close to the phone, you can even hear the phone conversation. All electrolytic capacitors should be rated at least 15V. Here is a circuit diagram of the image sensor electromagnatic:


Electromagnetic Sensor Using 741 Electromagnetic Sensor Using a 741

The switch S1 can be a slide type ON / OFF switch. POT R4 it can be used to adjust the gain. Better to have a radial type inductor for L1.

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