Katlax enterprises supplies capacitive proximity switch/sensor. This is non-contact sensing solution to metallic as well as non-metallic objects. This sensor is able to detect almost any medium by using adjustable sensitivity. High frequency oscillator with floating electrode in the transistor base circuit is the main functional element of capacitive proximity switch. The noise field exists in region of base electrode and represents active area of proximity switch in the non-active stage. The oscillations during the during the appearance of medium in active area. The switching stage rectifies and switches high frequency oscillations, which leads to dc signal triggers output stage. The switching stage comprises signal feedback system. Potentiometer adjusts the level of this system and provides presentable response sensitivity of switch.
