| 摘要 |
<p>PURPOSE: To properly adjust one circuit parameter of an electric circuit of the proximity switch, especially a resistance required to obtain an operating distance at an optional point. CONSTITUTION: This proximity switch is constituted of a coil acting like a sensor, a tank circuit being a component for an oscillator and an oscillator for a demodulation circuit, a threshold level switching circuit a transistor(TR) TH used to form a switching hysteresis, and an adjustable resistor Ra acting so as to balance an amplitude of the oscillator or the like. In an adjustment circuit, a program is set by programming data to be transferred through modulated signals and voltages at a usual terminal of the proximity switch.</p> |
