Patent EP0196679A2 successfully refreshed from Google Patents.
EP0196679A2
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EP
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Switching regulator
Assignee: Nippon Chemi Con Corp
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Filing: 1983-05-25
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Granted: —
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Expires: 2003-05-25
Abstract
Abstract The present invention relates to a switching regulator including a switching transistor (6) far converting a d.c. input to an a.c. voltage, a first transistor (30) for driving said switching transistor (6), a second transistor (3) for detecting a variation in the level of the d.c. output voltage by comparison with a reference voltage and for controlling the switching operation of said first transistor (30) according to the detected variation, and a constant-voltage diode (40) for setting the operating level of said second transistor (Figure 3).
Inventors
- 👤 Tetsuhiko Nippon Chemi-Con Corporation Shimpo
- 👤 Isao Nippon Chemi-Con Corporation Fujihata
- 👤 Atsushi Nippon Chemi-Con Corporation Yanase
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 18:34
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/145; H02M3/155; H02M3/156; H02M3/1563
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
79 words
A switching regulator including a switching transistor (6) for converting a d.c. input to an a.c. voltage, a first transistor (30) for driving said switching transistor (6), a second transistor (38) for detecting a variation in the level of the d.c. output voltage by comparison with a reference voltage and for controlling the switching operation of said first transistor (30) according to the detected variation, and a constant-voltage diode (40) for setting the operating level of said second transistor.
Claim 2
Dependent Claim
79 words
A switching regulator including a switching transistor (6) for converting a d.c. input to an a.c. voltage, a first transistor (30) for driving said switching transistor (6), a second transistor (38) for detecting a variation in the level of the d.c. output voltage by comparison with a reference voltage and for controlling the switching operation of said first transistor (30) according to the detected variation, and a constant-voltage diode (40) for setting the operating level of said second transistor.
Claim 3
Dependent Claim
31 words
A switching regulator according to Claim 1, characterized in that the switching pulses generated in said switching transistor (6) are positively fed back to the base of said first transistor (30).
Claim 4
Dependent Claim
29 words
A switching regulator according to Claim 1, characterized. in that the base of. said first. transistor (30) is provided with an input from a reference waveform generator circuit (46).
Claim 5
Dependent Claim
27 words
A switching regulator according to Claim 1, characterized in that the base of said first transistor (30) is connected to the collector of said second transistor (38).
Claim 6
Dependent Claim
23 words
A switching regulator according to Claim 1, characterized in that the anode of said canstant voltage diode. (40) is connected to ground potential.
Claim 7
Dependent Claim
29 words
A switching regulator according to Claim 1, characterized by constant current supply means for providing a constant operating current through the second transistor (38) and the first transistor (30).
Claim 8
Dependent Claim
48 words
A switching regulator according to Claim 6, characterized in that said constant current supply means has a constant-voltage circuit between an input terminal and an output terminal on the higher potential side, said circuit supplying a constant current to the first transistor (30) and the second transistor (38).
Claim 9
Dependent Claim
51 words
A switching regulator according to Claim 6, characterized in that said constant current supply means includes a constant-voltage circuit between an input terminal and an output terminal on the higher potential side, and a constant-current circuit that produces a constant current in response to a bias input to said constant-voltage circuit.
Claim 10
Dependent Claim
37 words
A switching regulator according to Claim 1, characterized by a constant-voltage circuit which is connected between the input terminals receiving said d.c. input and provides a constant operating-current flowing through said first and second transistors (30, 38).
Claim 11
Dependent Claim
61 words
A switching regulator according to Claim 9, characterized in that said constant-voltage circuit is made of a resistor (42) connected in series with a constant-voltage diode (40) and supplies a constant current to said first and second transistors (30, 38) from the junction between said resistor (42) and the diode (40) upon application-of an input voltage to said constant voltage circuit.
References Cited (Backward Citations)
No citation records indexed.
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