JPS60153075U

JPS60153075U - Degaussing circuit

Info

Publication number: JPS60153075U
Application number: JP4031784U
Authority: JP
Inventors: 寺島　久也; 達雄西又
Original assignee: 日本電気ホームエレクトロニクス株式会社
Priority date: 1984-03-21
Filing date: 1984-03-21
Publication date: 1985-10-12

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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の消磁回路を示す回路図、第２図は第１図
に示す回路に示す消磁コイルに流れる電流波形を示す図
、第３図は本考案による消磁回路の一実施例を示す回路
図、第４図は笹３図に示す消磁コイルに流れる電流波形
を示す図である。１．３．１２・・・抵抗、２，８．１２・・・コンデン
サ、６・・・消磁コイル、７・・・サイリスタ（半導体
スイッチング素子）、９・・・消磁スイッチ、１０・・
・制御回路。Fig. 1 is a circuit diagram showing a conventional degaussing circuit, Fig. 2 is a diagram showing the current waveform flowing through the degaussing coil shown in the circuit shown in Fig. 1, and Fig. 3 shows an embodiment of the degaussing circuit according to the present invention. The circuit diagram, FIG. 4, is a diagram showing the current waveform flowing through the degaussing coil shown in FIG. 1.3.12...Resistor, 2,8.12...Capacitor, 6...Degaussing coil, 7...Thyristor (semiconductor switching element), 9...Degaussing switch, 10...
・Control circuit.

Claims

[Scope of utility model registration request]

A relatively large-capacity first capacitor connected to a degaussing power source via a current limiting resistor, a degaussing coil connected across a semiconductor switching element across the first capacitor, and a degaussing coil connected in parallel to the degaussing coil. said first connected to
A second capacitor having a smaller capacity than the capacitor, and a control circuit that turns on the semiconductor switching element only during a half period of the resonance period of the first capacitor and the degaussing coil when the degaussing switch is turned on. degaussing circuit.