JPS55133673A - High voltage generator - Google Patents

High voltage generator

Info

Publication number
JPS55133673A
JPS55133673A JP4059979A JP4059979A JPS55133673A JP S55133673 A JPS55133673 A JP S55133673A JP 4059979 A JP4059979 A JP 4059979A JP 4059979 A JP4059979 A JP 4059979A JP S55133673 A JPS55133673 A JP S55133673A
Authority
JP
Japan
Prior art keywords
oscillation
load
circuited
turned
short
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
JP4059979A
Other languages
Japanese (ja)
Other versions
JPS5940313B2 (en
Inventor
Takafumi Koga
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 Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP54040599A priority Critical patent/JPS5940313B2/en
Publication of JPS55133673A publication Critical patent/JPS55133673A/en
Publication of JPS5940313B2 publication Critical patent/JPS5940313B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
    • H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
    • H02M3/06—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider
    • H02M3/07—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To prevent a piezoelectric transformer from cracking, by providing a protection circuit which stops the oscillation of an oscillation circuit when a load is short-circuited. CONSTITUTION:When a load is short-circuited, a current flowing through a high voltage rectification diode D3 increases and the voltage across a resistor R7 rises. At that time, a PUT7 is turned on and a switching transistor 8 is turned on. As a result, the base voltage of a driving transistor 9 falls, it is turned off, an oscillation circuit stops oscillating and current supply to a the load RL is stopped. When a capacitor C1 is discharged, the driving transistor 9 resumes oscillating. Oscillation and stoppage of oscillation are thus repeated while the load RL is short-circuited.
JP54040599A 1979-04-03 1979-04-03 High pressure generator Expired JPS5940313B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54040599A JPS5940313B2 (en) 1979-04-03 1979-04-03 High pressure generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54040599A JPS5940313B2 (en) 1979-04-03 1979-04-03 High pressure generator

Publications (2)

Publication Number Publication Date
JPS55133673A true JPS55133673A (en) 1980-10-17
JPS5940313B2 JPS5940313B2 (en) 1984-09-29

Family

ID=12584967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54040599A Expired JPS5940313B2 (en) 1979-04-03 1979-04-03 High pressure generator

Country Status (1)

Country Link
JP (1) JPS5940313B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6486612B2 (en) 1997-05-26 2002-11-26 Taiheiyo Cement Corporation Control circuit and method for protecting a piezoelectric transformer from an open state and a short-circuited state

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6486612B2 (en) 1997-05-26 2002-11-26 Taiheiyo Cement Corporation Control circuit and method for protecting a piezoelectric transformer from an open state and a short-circuited state

Also Published As

Publication number Publication date
JPS5940313B2 (en) 1984-09-29

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