Electricity: power supply or regulation systems – Optical coupling to semiconductor
Patent
1988-06-10
1990-07-31
Shoop, Jr., William M.
Electricity: power supply or regulation systems
Optical coupling to semiconductor
323282, 323284, 341144, 363 21, G05F 144
Patent
active
049453017
ABSTRACT:
A constant-voltage power supply circuit having a light-emitting element and a photosensitive element optically coupled with each other and a driving power source for driving the light emitting element, the circuit using an output voltage of the photosensitive element as a reference voltage; and an amplifier circuit using a constant current converted from the reference voltage of the constant-voltage power supply circuit; and a DA converter adapted for delivering binary digital signals to the constant-voltage power supply circuit.
REFERENCES:
patent: 3321631 (1967-05-01), Biard et al.
patent: 3359483 (1967-12-01), Biard
patent: 3737756 (1973-06-01), Hasley et al.
patent: 3958175 (1976-05-01), Braun
patent: 4366432 (1982-12-01), Noro
patent: 4761702 (1988-08-01), Pinard
R. C. Foss, "A Junk-Box 5-Volt Power Supply", May 1976, Popular Electronics.
Koga Yoshiro
Kume Hiroshi
Nakao Kenji
Onkyo Kabushiki Kaisha
Shoop Jr. William M.
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