Ringing choke converter

Claim 2

A ringing choke converter power supply device comprising a ringing choke converter power supply in which an output voltage is stabilized by an indirect feedback system; a saturable reactor provided on a primary or secondary side of said ringing choke converter power supply; and a control circuit for transmitting a control signal to said saturable reactor in such a direction that an error signal becomes zero by making a comparison between an output voltage of said ringing choke converter power supply and a predetermined reference voltage; wherein said ringing choke power supply comprises a transformer in which a DC input voltage is impressed on an anode of a primary winding thereof; a switching element having an input terminal to which a cathode of said primary winding is connected, and an output terminal to which a reference voltage line on an input side is connected; a secondary circuit for outputting a DC voltage by rectification smoothing a switching signal generated in a secondary winding of said transformer; a voltage detecting winding provided in said transformer; a current limit resistance interposed between said voltage detection winding and a control terminal of said switching element; a feedback diode having a cathode and connected to a connecting point between said voltage detection winding and said current limit resistance; a Zener diode having a cathode end thereof connected to a connecting point between said current limit resistance and said control terminal of said switching element; and a capacitor for connecting said reference voltage line to said connecting point between said feedback diode and said Zener diode.

Claim 3

The device of claim 1, wherein said saturable reactor element is interposed between said transformer secondary winding and a rectifier circuit.

Claim 4

The device of claim 1, wherein said saturable reactor element is interposed between said voltage detection winding and said feedback diode, or between said feedback diode and said capacitor.

Claim 5

The device of claim 3, wherein element a control winding is wound on the same core as that of said saturable reactor and is supplied with an output signal from said control circuit.

Claim 6

A ringing choke converter power supply device comprising a ringing choke converter power supply comprising a transformer in which a DC input voltage is impressed on an anode of a primary winding, a switching element in which a reference voltage line on the input side is connected to an output terminal, a first secondary circuit for outputting a DC voltage by rectification smoothing a switching signal generated in a first secondary winding of said transformer, a second secondary circuit for the DC voltage by rectification smoothing a switching signal generated in a second secondary winding of said transformer, a voltage detection winding provided in said transformer, a current limit resistance disposed between said voltage detection winding and a control terminal of said switching element, a feedback diode having a cathode terminal connected to a connecting point between said voltage detection winding and said current limit resistance, a Zener diode having a cathode terminal connected to a connecting point between said current limit resistance and said control terminal of said switching element, and a capacitor for connecting said reference voltage line to a connecting point between said feedback diode and said Zener diode; a saturable reactor provided on a primary or secondary side of said ringing choke converter power supply and having the same core winding with two windings; a signal processing circuit for performing an arithmetic operation with respect to output voltages of said first and second secondary circuits of said ringing choke converter power supply; and a control circuit for transmitting a control signal to said saturable reactor in such a direction that an error signal obtained by comparing a signal processed by said signal processing circuit with a predetermined reference voltage becomes zero.

Claim 7

A ringing choke converter power supply device comprising a ringing choke converter power supply comprising a transformer in which a DC input voltage is impressed on an anode of a primary winding, a switching element in which a reference voltage line on the input side is connected to an output terminal, a first secondary circuit for outputting a DC voltage by rectification smoothing a switching signal generated in a first secondary winding of said transformer, a second secondary circuit for the DC voltage by rectification smoothing a switching signal generated in a second secondary winding of said transformer, a voltage detection winding provided in said transformer, a current limit resistance disposed between said voltage detection winding and a control terminal of said switching element, a feedback diode having a cathode terminal connected to a connecting point between said voltage detection winding and said current limit resistance, a Zener diode having a cathode terminal connected to a connecting point between said current limit resistance and said control terminal of said switching element, and a capacitor for connecting said reference voltage line to a connecting point between said feedback diode and said Zener diode; a saturable reactor provided on a primary or secondary side of said ringing choke converter power supply and having the same core winding with two windings; a signal processing circuit for performing an arithmetic operation with respect to output voltages of said first and second secondary circuits of said ringing choke converter power supply; and a control circuit for transmitting a control signal to said saturable reactor in such a direction that an error signal obtained by comparing a signal processed by said signal processing circuit with a predetermined reference voltage becomes zero.

Claim 8

The device of claim 5, wherein said arithmetic operation of said signal processing circuit takes the larger or smaller of the output voltages of said first and second secondary circuits.