§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
EP0257101A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Switching regulator

Assignee: Fanuc Corp
•
Filing: 1987-02-23
•
Granted: —
•
Expires: 2007-02-23
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract In a DC-DC converter using an inverter, a series circuit consisting of a primary winding (N 41 ) of a main power source transformer (T 4 ), a first diode (45) and a switching means (2) is connected to a DC power source (1), and the primary winding (N 51 , N 61 ) of a least one auxiliary transformer (T s , Ts) and a second diode (55, 56) correspondent are connected in a parallel with a series circuit consisting of the primary winding (N 41 ) of the main power source transformer (T 4 ) and the first diode (45). Thus, a chopped voltage is applied to a plurality of transformers simultaneously by using a single switching control circuit (3) and a single switching means (2), so that a plurality of DC voltages can be outputted being inslated from each other.

Inventors

  • 👤 Naoto Ota

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 11:20
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M1/00; H02M1/0083; H02M1/009

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 133 words
A switching regulator comprising: a power supply means; a switching means; a main power transformer, a primary winding of said main power transformer being connected to said power supply means via said switching means; a switching control circuit for detecting a voltage of one secondary winding of said main power transformer and controlling a duty ratio of said switching means; a first diode inserted in series with and in a forward direction to a primary winding of said main power transformer; at least one subsidiary power transformer, a primary winding of said subsidiary power transformer being connected in parallel with said primary winding of said main power transformer; and a second diode inserted in series with and in a forward direction to a primary winding of said at least one subsidiary power transformer.
Claim 2
Dependent Claim 133 words
A switching regulator comprising: a power supply means; a switching means; a main power transformer, a primary winding of said main power transformer being connected to said power supply means via said switching means; a switching control circuit for detecting a voltage of one secondary winding of said main power transformer and controlling a duty ratio of said switching means; a first diode inserted in series with and in a forward direction to a primary winding of said main power transformer; at least one subsidiary power transformer, a primary winding of said subsidiary power transformer being connected in parallel with said primary winding of said main power transformer; and a second diode inserted in series with and in a forward direction to a primary winding of said at least one subsidiary power transformer.
Claim 3
Dependent Claim 30 words
A switching regulator according to claim 1, wherein said at least one subsidiary power transformer includes a regulating winding connected to said one secondary winding of said main power transformer.
Claim 4
Dependent Claim 18 words
A switching regulator according to claim 1, wherein said switching regulator is used for driving a power device.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag