Electricity: power supply or regulation systems – Input level responsive – Using a linearly acting final control device
Patent
1982-11-22
1985-02-12
Beha, Jr., William H.
Electricity: power supply or regulation systems
Input level responsive
Using a linearly acting final control device
307297, 307304, 323313, G05F 500
Patent
active
044994168
ABSTRACT:
A reference voltage circuit comprising a first resistor connected between a first power supply voltage terminal and a reference voltage terminal, and a second resistor connected between a second power supply voltage terminal and the reference voltage terminal. The reference voltage circuit further has a MOSFET, the drain of which is connected to the reference voltage terminal, the source of which is connected to the first power supply voltage terminal, and the gate of which is connected to the second power supply voltage terminal with proper selection of the second resistor in relationship to .beta. of the MOSFET and the reference voltage, the reference voltage may be kept constant irrespective of fluctuations in the power supply voltage. In other embodiments, the first and second resistors can be replaced with different types of MOSFETs to reduce the pattern area of the reference voltage circuit.
REFERENCES:
patent: 3975649 (1976-08-01), Kawagoe et al.
patent: 4298811 (1981-11-01), Salters et al.
patent: 4451744 (1984-05-01), Adam
patent: 4453121 (1984-06-01), Noufer
Beha Jr. William H.
Tokyo Shibaura Denki Kabushiki Kaisha
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