The proximity switch circuit with integrated magnetic field sensor HMC1001


Posted on Feb 6, 2014

As shown in figure, the proximity switch circuit is composed of HMC1001, operational amplifier (AMP04) and light emitting diode (LED). The operational amplifier is used as a comparator. When you move magnet with length being 6mm~12mm to HMC1001 in a predetermined position, the output voltage of MR bridge will reach 30mV, then the comparator flips, and output..


The proximity switch circuit with integrated magnetic field sensor HMC1001
Click here to download the full size of the above Circuit.




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