Electricity: power supply or regulation systems – External or operator controlled – Using a three or more terminal semiconductive device as the...
Patent
1986-09-19
1987-12-15
Wong, Peter S.
Electricity: power supply or regulation systems
External or operator controlled
Using a three or more terminal semiconductive device as the...
323271, 323314, 307264, G05F 320
Patent
active
047136006
ABSTRACT:
This invention provides a level conversion circuit comprising: an input terminal means for applying a voltage signal of predetermined amplitude level; an inverter circuit means applied by a first power supply and a second power supply and connected to the input terminal; a first MOS transistor of a first channel type, the source of which is connected to the second power supply, and the gate of which is connected to the output of the inverter circuit means; a current-voltage conversion means for converting from a source-drain current change of the first MOS transistor to voltage change, a first terminal of which is connected to the drain of the first MOS transistor, and a second terminal of which is connected to a third power supply; a second MOS transistor of the second channel type, the source of which is connected to the third power supply, and the gate of which is connected to the first terminal of the current-voltage conversion means; a third MOS transistor of the first channel type, the gate of which is connected to the input terminal, and source of which is connected to the second power supply, and drain of which is connected to the drain of the second MOS transistor; and an output terminal means for supplying a signal, the amplitude level of which is different from that of the voltage level corresponding to the signal applied to the input terminal, which is connected to the drain of the third MOS transistor.
REFERENCES:
patent: 3636381 (1972-01-01), Press
patent: 3801831 (1974-04-01), Dame
patent: 4216390 (1980-08-01), Stewart
patent: 4357571 (1982-11-01), Koessler
patent: 4506164 (1985-03-01), Higuchi
patent: 4565960 (1986-01-01), Takata et al.
Sugimoto Yasuhiro
Tsugaru Kazunori
Kabushiki Kaisha Toshiba
Wong Peter S.
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