A personal protection chain circuit in the work area
A kind of operation area and interlocking technology, applied in the direction of electrical components, electronic switches, pulse technology, etc., can solve the problems of casualties, accidental starting of equipment, accidents, etc.
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[0014] Example Attached figure 1 And attached figure 2In the embodiment shown, a personal protection interlock circuit in the work area is composed of a power supply circuit, a signal processing circuit, a delay processing circuit, an information memory circuit, an interlock output circuit and an audible and visual warning circuit, wherein the power circuit is composed of a power interface a (I), power interface b (II), rectifier transformer (TC), rectifier integrated block (IC1), filter capacitor a (C1), voltage regulator block (IC2) and filter capacitor b (C2), the rectifier transformer ( TC) includes a primary coil and a secondary coil, the primary coil is connected to terminal a (1) and terminal b (2), and the secondary coil is connected to terminal c (3) and terminal d (4); the signal processing circuit It is composed of pyroelectric sensor (SD), signal transmission interface, bias resistor a (R1), anti-interference capacitor (C3), transistor a (VT1), isolation resistor...
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