JPS6028963U - power supply - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の電源装置の１例の結線図、第２図は第１
図の動作説明図であり、負荷電流と負荷電圧との関係図
、第３図および第４図は従来の電源装置の他の例を示し
、第３図は切断時の結線図、第４図は溶接時の結線図、
第５図以下の図面はこの考案の電源装置の実施例を示し
、第５図は１実施例の結線図、第６図は第５図の動作説
明図であり、負荷電流と負荷電圧との関係図、第７図お
よび第８図は他の実施例を示し、第７図は切断時の結線
図、第８図は溶接時の結線図である。 ２．１８・・・変圧器、５，２８・・・電流検出部、１
１’、３５’・・・切断負荷、２３．４６・・・整流部
、３９′・・・溶接負荷、４３．５０・・・高周波交流
変換部、４４．４５．５１．５２・・・第１〜第４トラ
ンジスタ、４７．５０・・・制御部。Figure 1 is a wiring diagram of an example of a conventional power supply device, and Figure 2 is a wiring diagram of an example of a conventional power supply device.
3 and 4 show other examples of conventional power supply devices, FIG. 3 is a connection diagram at disconnection, and FIG. is the wiring diagram for welding,
Figure 5 and the following drawings show an embodiment of the power supply device of this invention, Figure 5 is a wiring diagram of one embodiment, Figure 6 is an explanatory diagram of the operation of Figure 5, and shows the relationship between load current and load voltage. The relational diagrams, FIGS. 7 and 8, show other embodiments, with FIG. 7 being a connection diagram during cutting, and FIG. 8 being a connection diagram during welding. 2.18...Transformer, 5,28...Current detection unit, 1
1', 35'... Cutting load, 23.46... Rectifying section, 39'... Welding load, 43.50... High frequency AC conversion section, 44.45.51.52... No. 1st to 4th transistors, 47.50...control unit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 直流を高周波交流に変換する複数個のスイッチング素子
力〈らなる高周波交流変換部と、変圧器を介した前記変
換部からの高周波交流を整流する整流部と、該整流部か
ら負荷電流が供給される溶接または切断負荷と、前記負
荷電流を検出して検出信号を出力する電流検出部と、基
準信号発生部からの基準信号と前記検出信号との誤差を
導出し、前記誤差にもとづく制御信号を前記変換部のス
イッチング素子に出力して前記変換部の出力周波数をｌ
ＫＨ２以上に制御する制御部とを備えた電源装置。A high-frequency AC converting section consisting of a plurality of switching elements that convert direct current to high-frequency alternating current, a rectifying section that rectifies the high-frequency alternating current from the converting section via a transformer, and a load current is supplied from the rectifying section. a welding or cutting load, a current detection section that detects the load current and outputs a detection signal, and an error between a reference signal from a reference signal generation section and the detection signal, and generates a control signal based on the error. output to the switching element of the converter to change the output frequency of the converter.
A power supply device equipped with a control unit that controls KH2 or higher.