JPS55125722A - Drive circuit - Google Patents

Drive circuit

Info

Publication number
JPS55125722A
JPS55125722A JP3413179A JP3413179A JPS55125722A JP S55125722 A JPS55125722 A JP S55125722A JP 3413179 A JP3413179 A JP 3413179A JP 3413179 A JP3413179 A JP 3413179A JP S55125722 A JPS55125722 A JP S55125722A
Authority
JP
Japan
Prior art keywords
current
lamp
switch
resistor
load
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
JP3413179A
Other languages
Japanese (ja)
Inventor
Ryosaku Taniguchi
Shinichiro Sakuraba
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP3413179A priority Critical patent/JPS55125722A/en
Publication of JPS55125722A publication Critical patent/JPS55125722A/en
Pending 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
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Electronic Switches (AREA)
  • Logic Circuits (AREA)

Abstract

PURPOSE:To easily suppress the flush current, by providing the second switch flowing the specified current to the load and the first switch limiting the current flowing to the load, and operating the sencond switch with delay. CONSTITUTION:The display signal 81 held at FF12 is splitted. One of the signals splitted is fed to the driving element 19 of the first switch to turn on the element 19 and current flows from the lamp power supply 22 to the lamp 21 and the resistor Rx. After that, the signal delayed at the delay circuit 13 is inputted to the drive element 17 of the second switch via the NAND gate 14, inverter 15, and AND gate 16. Specified current flows to the lamp through the conduction of the element 17. When the element 19 is ON, the lamp current is suppressed with the resistor Rx and the lamp resistor is increased when the element 17 is ON, then the rush current is almost the steady state current, allowing to easily suppress the rush current.
JP3413179A 1979-03-23 1979-03-23 Drive circuit Pending JPS55125722A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3413179A JPS55125722A (en) 1979-03-23 1979-03-23 Drive circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3413179A JPS55125722A (en) 1979-03-23 1979-03-23 Drive circuit

Publications (1)

Publication Number Publication Date
JPS55125722A true JPS55125722A (en) 1980-09-27

Family

ID=12405666

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3413179A Pending JPS55125722A (en) 1979-03-23 1979-03-23 Drive circuit

Country Status (1)

Country Link
JP (1) JPS55125722A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0550836U (en) * 1991-11-29 1993-07-02 株式会社三ツ葉電機製作所 Inrush current suppression circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0550836U (en) * 1991-11-29 1993-07-02 株式会社三ツ葉電機製作所 Inrush current suppression circuit

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