JPS57181228A - Output monitoring circuit - Google Patents

Output monitoring circuit

Info

Publication number
JPS57181228A
JPS57181228A JP6560681A JP6560681A JPS57181228A JP S57181228 A JPS57181228 A JP S57181228A JP 6560681 A JP6560681 A JP 6560681A JP 6560681 A JP6560681 A JP 6560681A JP S57181228 A JPS57181228 A JP S57181228A
Authority
JP
Japan
Prior art keywords
photocoupler
load
light emitting
power source
emitting diode
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.)
Granted
Application number
JP6560681A
Other languages
Japanese (ja)
Other versions
JPS6114691B2 (en
Inventor
Mamoru Hatakawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP6560681A priority Critical patent/JPS57181228A/en
Publication of JPS57181228A publication Critical patent/JPS57181228A/en
Publication of JPS6114691B2 publication Critical patent/JPS6114691B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/18—Modifications for indicating state of switch

Landscapes

  • Power Conversion In General (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To prevent a load from operating by the consumed current of a light emitting diode by connecting the light emitting element of a photocoupler to a load power source through a current limiting resistance. CONSTITUTION:A series circuit consisting of a resistance R3, the light emitting diode of a photocoupler PC2, and a transistor TR2 is connected across a load power source E2. The base current of the TR2 is applied through a voltage dividing circuit consisting of resistances R4 and R5 interposed between one terminal of a load L and the load of the load power source E2. Once the light emitting diode of the photocoupler PC2 turns on, the phototransistor of the photocoupler which is grounded at its emitter and also applied with electric power at its collector through a pull-up resistance R6 turns on. The phototransistor of the photocoupler PC2 sends out a monitor signal to a control circuit C.
JP6560681A 1981-04-30 1981-04-30 Output monitoring circuit Granted JPS57181228A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6560681A JPS57181228A (en) 1981-04-30 1981-04-30 Output monitoring circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6560681A JPS57181228A (en) 1981-04-30 1981-04-30 Output monitoring circuit

Publications (2)

Publication Number Publication Date
JPS57181228A true JPS57181228A (en) 1982-11-08
JPS6114691B2 JPS6114691B2 (en) 1986-04-19

Family

ID=13291836

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6560681A Granted JPS57181228A (en) 1981-04-30 1981-04-30 Output monitoring circuit

Country Status (1)

Country Link
JP (1) JPS57181228A (en)

Also Published As

Publication number Publication date
JPS6114691B2 (en) 1986-04-19

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