Electrical system, and power inlet apparatus and electrical receptacle assembly therefor
a technology of electrical systems and power inlet devices, applied in emergency power supply arrangements, coupling device details, coupling device connections, etc., can solve the problems of relatively high assembly costs, time-consuming, and inability of operators to quickly determine whether power is being delivered to the building, so as to save operators' tim
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[0033]FIG. 8 shows an example circuit schematic 200 for an electrical system, in accordance with one non-limiting embodiment of the disclosed concept. As shown, the example circuit 200 includes a number of resistors R1,R2,R3,R4, a transistor T1, a zener diode ZD, a diode D1, a capacitor C1, and a number of status indicators (e.g., without limitation, light emitting diodes LED1,LED2) each having an ON condition (i.e., illuminated) and an OFF condition (i.e., non-illuminated). Resistor R1 has a first end connected to an Earth line and a second end connected to R2 and the gate of T1. R2 has a first end connected to the gate of T1 and a second end connected to the emitter of T1, the anode end of ZD, and a First Phase line. T1 has a collector connected to the cathode end of LED2 and an emitter connected to the anode end of ZD and the First Phase line. LED1 is electrically connected in parallel with D1. The cathode end of ZD is connected with the parallel combination of LED1 and D1. The a...
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