发明名称 |
Direct current proximity detector having switching means which provide on two distinct outputs, signals when the target is located beyond or within a predetermined range |
摘要 |
A direct current proximity detector having a first terminal directly connected, to a terminal of a supply source and second and third terminals connected to the other terminal of the supply source through a load, an oscillator associated with a detector of its state of oscillation, a voltage stabilizer and a static switching device. The switching device comprises first and second transistors, the conducting state of the respective transistors depending upon the state of a corresponding output of an inverter unit which is controlled by the detector. The two transistors are connected to the first terminal through a Zener diode, second and third terminals being interconnected by means of two serially connected diodes of opposed polarities the common point of which supplies the voltage stabilizer.
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申请公布号 |
US4056769(A) |
申请公布日期 |
1977.11.01 |
申请号 |
US19760661078 |
申请日期 |
1976.02.25 |
申请人 |
LA TELEMECANIQUE ELECTRIQUE |
发明人 |
LEFEBVRE, MARCEL;ROUQUET, ALAIN |
分类号 |
G01B7/02;G01V3/11;(IPC1-7):G01R33/12 |
主分类号 |
G01B7/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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