JPS54102923A - Driving circiut - Google Patents

Driving circiut

Info

Publication number
JPS54102923A
JPS54102923A JP955578A JP955578A JPS54102923A JP S54102923 A JPS54102923 A JP S54102923A JP 955578 A JP955578 A JP 955578A JP 955578 A JP955578 A JP 955578A JP S54102923 A JPS54102923 A JP S54102923A
Authority
JP
Japan
Prior art keywords
voltage
turned
charging
power consumption
terminal
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
JP955578A
Other languages
Japanese (ja)
Other versions
JPS627554B2 (en
Inventor
Norikuni Azuma
Takanori Sugihara
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP955578A priority Critical patent/JPS54102923A/en
Publication of JPS54102923A publication Critical patent/JPS54102923A/en
Publication of JPS627554B2 publication Critical patent/JPS627554B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE: To reduce the power consumption at the operation time of the control Tr for the driving circuit of capacitive load charge such as the PDP element by inserting the variable resistor of the voltage dependance type into the base circuit of charging transistor Tr.
CONSTITUTION: In case capacitive load CL is charged, the high-voltage pulse is applied to terminal Vin and then the zero or negative input signal is applied to the base of control Tr TR1. As a result, TR1 is turned off, the collector potential of TR1 rises up, the voltage across variable resistor Z is reduced, and the value of resistor Z is increased. Accordingly, charging Tr TR2 is turned on the secure effective flow of charging current TE. In the steady state under which the high voltage is applied to terminal Vin, TR1 is turned on to clamp the application voltage. In this case, the voltage applied across resistance Z becomes nearly identical to the high voltage to be applied to Vin, and the value of Z increases greatly. As a result, the current flowing to TR1 is reduced to reduce the power consumption as well as to prevent the breakdown of TR1.
COPYRIGHT: (C)1979,JPO&Japio
JP955578A 1978-01-31 1978-01-31 Driving circiut Granted JPS54102923A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP955578A JPS54102923A (en) 1978-01-31 1978-01-31 Driving circiut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP955578A JPS54102923A (en) 1978-01-31 1978-01-31 Driving circiut

Publications (2)

Publication Number Publication Date
JPS54102923A true JPS54102923A (en) 1979-08-13
JPS627554B2 JPS627554B2 (en) 1987-02-18

Family

ID=11723518

Family Applications (1)

Application Number Title Priority Date Filing Date
JP955578A Granted JPS54102923A (en) 1978-01-31 1978-01-31 Driving circiut

Country Status (1)

Country Link
JP (1) JPS54102923A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5742233A (en) * 1980-08-22 1982-03-09 Ibm Driving circuit
JPS5780829A (en) * 1980-11-06 1982-05-20 Mitsubishi Electric Corp Output protecting circuit device
US4899086A (en) * 1986-12-29 1990-02-06 West Electric Company Ltd. Electroluminescence light emission apparatus
JPH0267591A (en) * 1988-09-02 1990-03-07 Hitachi Ltd Drive circuit and thin-film el display device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5742233A (en) * 1980-08-22 1982-03-09 Ibm Driving circuit
JPS5780829A (en) * 1980-11-06 1982-05-20 Mitsubishi Electric Corp Output protecting circuit device
US4899086A (en) * 1986-12-29 1990-02-06 West Electric Company Ltd. Electroluminescence light emission apparatus
JPH0267591A (en) * 1988-09-02 1990-03-07 Hitachi Ltd Drive circuit and thin-film el display device

Also Published As

Publication number Publication date
JPS627554B2 (en) 1987-02-18

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