Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent
1982-12-22
1984-07-17
Shoop, William M.
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
323254, H02P 1324
Patent
active
044609558
ABSTRACT:
A stabilizing power supply apparatus including, as a switching element, a magnetic amplifier supplied with a rectangular wave voltage produced by an inverter and controlled by a reset current. An error sensing circuit senses a difference between the output voltage of the magnetic amplifier and a reference voltage to produce an error signal corresponding to the sensed difference. An amplifier circuit amplifies the error signal into the reset current for the magnetic amplifier. The amplifier circuit includes a NPN-type transistor for amplifying the control current into the reset current and first and second diodes. The first diode has an anode terminal connected to a negative power supply line and a cathode terminal connected to the collector of the transistor in order that charge will not accumulate on the transistor base. The second diode has an anode terminal connected to the emitter of the transistor and a cathode terminal connected to the magnetic amplifier. The reset current is applied to the magnetic amplifier through the second diode to hold the output voltage of the apparatus constant by regulating the on/off timing of the magnetic amplifier in accordance with the difference between the magnitude of the output voltage and the magnitude of the reference voltage.
REFERENCES:
patent: 3200328 (1965-08-01), Green
patent: 3246170 (1966-04-01), Olshan
patent: 3624405 (1971-11-01), Bishop et al.
patent: 4217632 (1980-08-01), Bardos et al.
patent: 4375077 (1983-02-01), Williams
Hattori Masayuki
Nakamura Shigeo
Fanuc Ltd.
Shoop William M.
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