As shown in the figure, the multivibrator is composed of IC1, R1, R2, C1, C2, and VT1. R3, VT1, D1, etc. constitute a constant current charging circuit to keep the linearity of its charging. The shift switches S1, S2 enable the output strobe pulses of IC1 to provide gate pulses of 1000ms, 100ms, 10ms and 1ms.
IC2 and R7, D2, R6, etc. form an input adaptation circuit for receiving a square wave, sine wave or triangle wave of ±0.3~±0.9V. The four-input NAND gate IC4 is used to provide the inverting and delay. C5 and R10 function as differential circuits to provide differential narrow pulses for IC4-b and to reverse the output.
Mini Circuit breakers, also named as the air switch which have a short for arc extinguishing device. It is a switch role, and also is a automatic protection of low-voltage electrical distribution. Its role is equivalent to the combination of switch. Fuse. Thermal Relay and other electrical components. It mainly used for short circuit and overload protection. Generally, According to the poles, mini Circuit breaker can be divided into 1P , 1P+N , 2P, 3P and 4P.
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