JPS5876246U - DC input conversion circuit - Google Patents

DC input conversion circuit

Info

Publication number
JPS5876246U
JPS5876246U JP17034881U JP17034881U JPS5876246U JP S5876246 U JPS5876246 U JP S5876246U JP 17034881 U JP17034881 U JP 17034881U JP 17034881 U JP17034881 U JP 17034881U JP S5876246 U JPS5876246 U JP S5876246U
Authority
JP
Japan
Prior art keywords
conversion circuit
input
photocoupler
input conversion
primary side
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP17034881U
Other languages
Japanese (ja)
Inventor
英作 大西
高橋　「あ」
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP17034881U priority Critical patent/JPS5876246U/en
Publication of JPS5876246U publication Critical patent/JPS5876246U/en
Pending legal-status Critical Current

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  • Programmable Controllers (AREA)
  • Dc-Dc Converters (AREA)
  • Electronic Switches (AREA)

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

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

第１図は従来の直流入力変換回路を示す図、第２図は本
考案に係る直流入力変換回路を示す図、第３図は本考案
の他の実施例を示す図である。 １．２・・・電流制限用抵抗、３・・・発光ダイオード
、４・・・ホトカプラ、５・・・電源、６・・・ダイオ
ード、７・・・切換用抵抗、８・・・スイッチ。尚、図
中、同一符号は同−又は相当部分を示す。FIG. 1 is a diagram showing a conventional DC input conversion circuit, FIG. 2 is a diagram showing a DC input conversion circuit according to the present invention, and FIG. 3 is a diagram showing another embodiment of the present invention. 1.2... Current limiting resistor, 3... Light emitting diode, 4... Photocoupler, 5... Power source, 6... Diode, 7... Switching resistor, 8... Switch. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 一次側に低電圧の直流入力電圧が入力されるホトカプラ
と、該ホトカプラの一次側の入力に直列接続されている
電流制限用抵抗とを備える直流入力変換回路において、
前記ホトカプラの一次側に、並列かつ切換可能に切換用
抵抗を設け、前記ホトカプラの一次側に高電圧の直流入
力電圧を印加した場合前記切換用抵抗を動作させること
を特徴とする直流入力変換回路。A DC input conversion circuit comprising a photocoupler to which a low-voltage DC input voltage is input to the primary side, and a current limiting resistor connected in series to the input of the primary side of the photocoupler,
A DC input conversion circuit characterized in that a switching resistor is provided in parallel and switchably on the primary side of the photocoupler, and the switching resistor is operated when a high-voltage DC input voltage is applied to the primary side of the photocoupler. .
JP17034881U 1981-11-16 1981-11-16 DC input conversion circuit Pending JPS5876246U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17034881U JPS5876246U (en) 1981-11-16 1981-11-16 DC input conversion circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17034881U JPS5876246U (en) 1981-11-16 1981-11-16 DC input conversion circuit

Publications (1)

Publication Number Publication Date
JPS5876246U true JPS5876246U (en) 1983-05-23

Family

ID=29962312

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17034881U Pending JPS5876246U (en) 1981-11-16 1981-11-16 DC input conversion circuit

Country Status (1)

Country Link
JP (1) JPS5876246U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5714530B2 (en) * 1976-08-30 1982-03-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5714530B2 (en) * 1976-08-30 1982-03-25

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