Electricity: power supply or regulation systems – In shunt with source or load – Using a three or more terminal semiconductive device
Patent
1978-09-01
1980-09-23
Miller, J. D.
Electricity: power supply or regulation systems
In shunt with source or load
Using a three or more terminal semiconductive device
323 21, 323 24, 323 34, G05F 160
Patent
active
042245630
ABSTRACT:
An electrical regulator for operating a photographic illuminating lamp provides two controls on the triggering of a phase-controlled power switch. One control employs a differential switch in a feed-forward loop that adjusts the potential at which a timing capacitor triggers the power switch. The other control is a feedback loop which controls the rate at which the timing capacitor is charged. The regulator combines the feed-forward and feedback controls to regulate the mean square of the lamp voltage for a wide range of input voltage amplitudes and frequency.
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D. Perkins, "True RMS Voltage Regulators", Application Note AN-509, Motorola Semiconductor Products Inc.
R. W. Fox, "Solid State Incandescent Lighting Control", Semiconductor Department of General Electric Corporation.
Miller J. D.
Polaroid Corporation
Roman Edward S.
Wong Peter S.
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