Title: Modulated energy conservative current supply

Abstract: A regulated current source including a large inductance provides desired, average DC current by modulation of an electron switch, such that the inductance is disconnected from the power supply on a regular basis by a clock circuit, and the switch reconnects the power supply when the current in a return path to the inductor has decayed to a desired magnitude. The desired decay current across a resistor is compared with a reference which turns the switch on in the absence of the turn-off signal from a clock. As an energy saving adjunct in a deflection amplifier system for a CRT, a bipolar embodiment employing a single large inductance and duplicate other apparatus provides a regulated current of either polarity or zero magnitude, the inductor current being maintained even when providing zero current with the deflection system.

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Inventors: Kalmanash, Michael H. (Bethel, CT, US)
Waehner, Glenn C. (Riverside, CT, US)

Application Number: 513359
Filing Date: 1974-10-09
Publication_date: 1976-01-27
Assignee: United Technologies Corporation (Hartford, CT)
Primary Class(es): 323/287 307/52, 315/387, 315/411
Other Classes:
US Patent Ref:

3237008	Feb, 1966	Karp et al.	323/22.
3404310	Oct, 1968	Williams	315/389.
3426245	Feb, 1969	Yurasek et al.	315/389.
3562623	Feb, 1971	Farnsworth	323/DIG.
3600666	Aug, 1971	Gliever	323/DIG.
3621372	Nov, 1971	Paine	323/DIG.
3628083	Dec, 1971	Holmes	315/387.
3787730	Jan, 1974	Ray et al.	323/25.
3818306	Jun, 1974	Marini	323/DIG.
3818318	Jun, 1974	Schott et al.	323/17.
3835368	Sep, 1974	Williams	323/DIG.
3849665	Nov, 1974	Wells	323/22.

Other Refs:
Primary Examiner: Goldberg, Gerald
Assistant Examiner:
Attorney: Williams; M. P.