US5086383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Step-up power supplying circuit
Assignee: Cosel Co Ltd
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Filing: 1991-04-30
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Granted: 1992-02-04
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Expires: 2011-04-30
Abstract
Abstract After an AC voltage was rectified and smoothed, it is stepped up by a chopper circuit. Another winding is magnetically coupled to a choke coil of the chopper circuit so as to have the same polarity. An inductance for adjusting a current is connected serially with another winding. A current of a phase opposite to a phase of a current flowing in the choke coil is generated in another winding, thereby setting off a ripple current flowing in an input smoothing capacitor.
Inventors
- 👤 Seiji Oda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:12
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/145; H02M3/155
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
147 words
A step-up power supplying circuit for rectifying an AC voltage and, thereafter, for stepping up and generating a step-up voltage, comprising: rectifying means for rectifying the AC voltage; smoothing means for smoothing a rectified output of said rectifying means; chopper means for transferring a DC voltage which is generated from said smoothing means to a choke coil, for rectifying and smoothing an intermittent energy which is generated by on/off driving operations of said choke coil by switching means, and thereby for generating a step-up DC voltage; another winding which is magnetically coupled to said choke coil so as to have a same polarity and whose one end is connected to a ground and whose the other end is connected to an input side of the choke coil; and an inductance which is connected serially with said another winding and adjusts a current flowing in said another winding.
Claim 2
Dependent Claim
147 words
A step-up power supplying circuit for rectifying an AC voltage and, thereafter, for stepping up and generating a step-up voltage, comprising: rectifying means for rectifying the AC voltage; smoothing means for smoothing a rectified output of said rectifying means; chopper means for transferring a DC voltage which is generated from said smoothing means to a choke coil, for rectifying and smoothing an intermittent energy which is generated by on/off driving operations of said choke coil by switching means, and thereby for generating a step-up DC voltage; another winding which is magnetically coupled to said choke coil so as to have a same polarity and whose one end is connected to a ground and whose the other end is connected to an input side of the choke coil; and an inductance which is connected serially with said another winding and adjusts a current flowing in said another winding.
Claim 3
Dependent Claim
21 words
A circuit according to claim 1, wherein a capacitor for cutting out a DC component is provided serially with said inductance.
Claim 4
Dependent Claim
36 words
A circuit according to claim 1, wherein said inductance adjusts in a manner such that a change in current flowing in said another winding is equalized to a change in current flowing in said choke coil.
Claim 5
Dependent Claim
160 words
A step-up power supplying circuit for rectifying an AC voltage and, thereafter, for stepping up and generating a step-up voltage, comprising: rectifying means for rectifying the AC voltage; smoothing means which is constructed by serially connecting first and second capacitors for smoothing a rectified output of said rectifying means; chopper means for transferring a DC voltage which is generated from said smoothing means to a choke coil, for rectifying and smoothing an intermittent energy which is generated by on/off driving operations of said choke coil by switching means, and thereby for generating a step-up DC voltage; another winding which is magnetically coupled to the choke coil so as to have a same polarity and whose one end is connected between said first and second capacitors and whose the other end is connected to an input side of the choke coil; and an inductance which is connected serially with said another winding and adjusts a current flowing in said another winding.
Claim 6
Dependent Claim
160 words
A step-up power supplying circuit for rectifying an AC voltage and, thereafter, for stepping up and generating a step-up voltage, comprising: rectifying means for rectifying the AC voltage; smoothing means which is constructed by serially connecting first and second capacitors for smoothing a rectified output of said rectifying means; chopper means for transferring a DC voltage which is generated from said smoothing means to a choke coil, for rectifying and smoothing an intermittent energy which is generated by on/off driving operations of said choke coil by switching means, and thereby for generating a step-up DC voltage; another winding which is magnetically coupled to the choke coil so as to have a same polarity and whose one end is connected between said first and second capacitors and whose the other end is connected to an input side of the choke coil; and an inductance which is connected serially with said another winding and adjusts a current flowing in said another winding.
Claim 7
Dependent Claim
36 words
A circuit according to claim 4, wherein said inductance adjusts in a manner such that a change in current flowing in said another winding is equalized to a change in current flowing in said choke coil.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-03 | 1995-08-05 | 1996-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-03 | 1999-08-05 | 2000-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-03 | 2003-08-05 | 2004-02-04 | $7700.00 | Window Closed / Lapsed |