Semiconductor integrated circuit using junction field effect tra

Details Semiconductor integrated circuit using junction field effect tra Semiconductor integrated circuit using junction field effect tra

1991-02-13

1992-12-01

LaRoche, Eugene R.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307305, 307548, 307554, H03K 3353

Patent

active

051681757

ABSTRACT:
A semiconductor integrated circuit for obtaining constant voltage characteristics or a current switching function by controlling an output current using a current control element has a DC input terminal, a common input/output terminal, and an output terminal. A junction field effect transistor (JFET) is used as a current control element. The first main electrode (drain) and second main electrode (source) of the JFET are connected to the DC current input terminal and the output terminal, respectively. A DC power is input between the DC input terminal and the common input/output terminal. A power between the output terminal and the common input/output terminal is applied to a load. A maximum current of the JFET is limited to a drain maximum saturation current and a current having a value larger that of the maximum saturation current is not basically supplied to the JFET.

REFERENCES:
patent: 3633044 (1972-01-01), Buckstad
patent: 4937469 (1990-06-01), Larson et al.

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