Electricity: power supply or regulation systems – Remote sensing
Patent
1977-10-12
1978-08-29
Goldberg, Gerald
Electricity: power supply or regulation systems
Remote sensing
307297, 323 4, 330104, G05F 158
Patent
active
041106776
ABSTRACT:
A voltage regulator circuit including an operational amplifier having supply voltage terminals connected to a source of unregulated supply voltage and a two-terminal, essentially zero temperature coefficient, semiconductor bandgap voltage reference circuit connected in a negative feedback path between the output terminal and one input terminal of the amplifier. The amplifier provides a constant current source for the bandgap voltage reference circuit, and the amplifier and reference circuit cooperate to establish a regulated output voltage at the amplifier output terminal. A resistive divider network is connected in a positive feedback path between the output and a second input terminal of the amplifier to establish the value of the regulated voltage within a range of values between the bandgap voltage and the unregulated supply voltage.
REFERENCES:
patent: 3617859 (1971-11-01), Dobkin
patent: 3735242 (1973-05-01), Anderson
patent: 3828240 (1974-08-01), Keller et al.
patent: 3887863 (1975-06-01), Brokaw
patent: 3917993 (1975-11-01), Picmaus et al.
patent: 4017788 (1977-04-01), Stepp et al.
IEEE Trans. Broadcast & Telereceivers, vol. BTR-18, No. 2, May 1972; "A New Dimension to Monolithic Voltage Regulators", by Chu & Oswald; pp. 73-76.
Axen Charles G.
Boronkay Attila D.
Beckman Instruments Inc.
Goldberg Gerald
Meads R. R.
Shewmaker J. R.
Steinmeyer R. J.
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