Sensitive electromagnetic field sensor

Posted on Feb 6, 2014

This is the circuit diagram of a very sensitive electromagnetic field sensor which can sense electromagnetic field from 40Hz to 140Hz. The low noise opamp LF351 and associated components forms the pick-up section. 1uH coil L1 is used for sensing the field and the IC1 performs the necessary amplification. If the picked electromagnetic field is in t

Sensitive electromagnetic field sensor
Click here to download the full size of the above Circuit.

he audio frequency range, it can be heard through the head phone Z1. There is also a meter arrangement for accurate measuring of the signal strength. Transistor Q1 performs additional amplification on the picked signal in order to drive the meter.

Leave Comment

characters left:

New Circuits



Popular Circuits

Motorized Remote control with ATMEGA328
astable circuit produce pulses
LTC1436ACGN-PLL High Efficiency Low Noise Synchronous Step-Down Switching Regulators
Flickering Light II
The 2N5109 Amplifiers
Ultrasonic transmitter circuit
Binary gain step circuit diagram by the PGA205