JP2008172985A

JP2008172985A - Low-ripple rectifying circuit

Info

Publication number: JP2008172985A
Application number: JP2007024836A
Authority: JP
Inventors: Suezo Kudo; 末蔵工藤
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-06
Filing date: 2007-01-06
Publication date: 2008-07-24

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-ripple circuit in which the voltages whose phases are shifted by 90 degrees after rectification are connected in parallel. <P>SOLUTION: In the low-ripple rectifying circuit, two both group rectifying circuits by power transformers of identical individual specifications are arranged, power is supplied to one circuit via an isolation transformer, and parallel connection is made, after respective both group rectification. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、オーディオ用アンプの整流回路に関するものである。The present invention relates to a rectifier circuit for an audio amplifier.

従来の整流は単相の両波整流で行われていた。Conventional rectification is performed by single-phase double-wave rectification.

そのために次のような問題があった。
整流される交流が単相であるため両波整流をすると大量のリップルを含んだ直流になっていた。このため厳重な平滑回路が必要であった。本発明は以上の問題を解決するためになされたものである。Therefore, there were the following problems.
Since the alternating current to be rectified is a single phase, when the two-wave rectification is performed, the direct current includes a large amount of ripple. For this reason, a strict smoothing circuit is required. The present invention has been made to solve the above problems.

個別の同じ規格の電源トランスによる両派整流回路を２回路設け、そのうちの１回路に巻き線比１対１の絶縁トランスを介して９０度位相の遅れた電力を供給し、それぞれ両派整流後に並列接続をする。以上を特徴とする低リップル整流回路である。Two double rectifier circuits with separate power transformers of the same standard are provided, one of which is supplied with 90 degree phase-delayed power via an insulation transformer with a winding ratio of 1: 1, and connected in parallel after both rectifiers are rectified. do. This is a low ripple rectifier circuit characterized by the above.

２回路で両波整流され並列接続された電圧は、位相が９０度ずれているのでお互いに補完しあい、電源トランスの２次電圧の実行値以下の電圧が存在しなくなるので、リップルの少ない直流となる。Since the two-wave rectified and parallel-connected voltages in two circuits are 90 degrees out of phase, they complement each other, and there is no voltage less than the effective value of the secondary voltage of the power transformer. Become.

以下、本発明の回路構成について説明する。
（イ）電源トランス（１）の２次側をダイオード（４）で両波整流する。絶縁トランス（３）に電源トランス（２）を接続し、２次側をダイオード（５）で両波整流する。
（ロ）ダイオード（４）のアノードとダイオード（５）のアノードを接続する。
（ハ）ダイオード（４）のカソードとダイオード（５）のカソードを接続する。
本発明は以上のような構成で成り立っている。The circuit configuration of the present invention will be described below.
(A) The secondary side of the power transformer (1) is both-wave rectified by the diode (4). The power transformer (2) is connected to the insulating transformer (3), and the secondary side is subjected to both-wave rectification by the diode (5).
(B) The anode of the diode (4) and the anode of the diode (5) are connected.
(C) Connect the cathode of the diode (4) and the cathode of the diode (5).
The present invention is configured as described above.

本発明の回路図 Circuit diagram of the present invention

Explanation of symbols

１電源トランス
２電源トランス
３絶縁トランス
４ダイオード
５ダイオード1 Power Transformer 2 Power Transformer 3 Insulation Transformer 4 Diode 5 Diode

Claims

A low-ripple rectifier circuit comprising two separate rectifier circuits each having a power transformer of the same standard, supplying power to one of the circuits via an insulating transformer, and connecting them in parallel after the two rectifiers.