Level shifter for a power supply regulator in a television appar

Electricity: power supply or regulation systems – Self-regulating – Using a three or more terminal semiconductive device as the...

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315411, 323282, G05F 320

Patent

active

047148713

ABSTRACT:
A level shifter receives a variable input voltage such as a beam current representative voltage of a cathode ray tube and produces an output voltage that changes when the input voltage changes such that the output voltage is level shifted relative to the input voltage. The output voltage is coupled to an input terminal of an error amplifier of a power supply voltage regulator of a television receiver. The level shifter includes a current mirror arrangement responsive to the input voltage. A band gap type voltage source determines the amount of level shifting that is produced by the level shifter.

REFERENCES:
patent: 3814851 (1974-06-01), Nakagawa et al.
patent: 4221979 (1980-09-01), Ahmed
patent: 4292654 (1981-09-01), Steckler et al.
patent: 4387399 (1983-06-01), Novotny
patent: 4580090 (1986-04-01), Bailey et al.
patent: 4595977 (1986-06-01), von der Ohe
patent: 4607249 (1986-08-01), Naylor
patent: 4629913 (1986-12-01), Lechner
Data sheet for a linear integrated circuit CA3210E and CA3223E of the RCA Corporation, published May 1982, entitled TV Horizontal/Vertical Countdown Digital Sync System.
An article entitled A Simple Three-Terminal IC Bandgap Reference, in the name of A. P. Brokaw, reprinted from IEEE J. Solid-State Circuits, vol. SC9, pp. 388-393, Dec. 1974.
An article entitled New Developments in IC Voltage Regulators published in IEEE Journal of Solid-State Circuits, vol. SC-6, No. 1, Feb. 1971, in the name of R. J. Widlar.

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