Tag Archives: proximity sensor

Proximity Switch

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This circuit is for an unusually sensitive and stable proximity alarm which may be built at very low cost. If the negative terminal is grounded, it will detect the presence of a hand at more than 200mm. If it is not grounded, this range is reduced to about one-third. The… Read more »

Proximity Infrared Detector

This is the simple circuit of proximity infrared detector, proximity sensor based  infrared. The applications of this circuit are the most varied. From placing it in the front door to prevent people stop in front of this circuit, or even placing it in the back and front of the car… Read more »