POWER SUPPLY CIRCUIT DEVICE USING NEGATIVE THRESHOLD FIVE-TERMINAL N-TYPE METAL OXIDE SEMICONDUCTOR TRANSISTOR ELEMENT OF POWER AMPLIFYING MULTI-STAGE CONNECTION FOR XOR LOGICAL OPERATION OF SENSOR SIGNAL

摘要

According to the present invention, a voltage converter for converting high voltage of AC and DC power into DC power of low voltage does not include a separate ordinary transformation circuit and a Zener diode element but includes a depletion N-type metal oxide semiconductor (NMOS) field effect transistor (FET) having voltage characteristics between negative gate sources, that is, a negative threshold five-terminal NMOS element. According to a power supply device of the present invention, an ordinary transformation circuit (100) and a Zener diode circuit (104) are removed, such that areas occupied by the ordinary transformation circuit (100) and the Zener diode circuit (104) are removed, thereby realizing a low cost circuit. Also, standby and operation power loss can be blocked, so a circuit without power consumption in a standby and operation power supply state can be realized, and a free voltage operation can be realized up to a high voltage supply power area. Furthermore, an amplification and power supply device can stably detect a signal of a sensor element having a weak output signal to amplify the same.;COPYRIGHT KIPO 2017