JPS57162008A - Driving circuit for pressure generator - Google Patents

Driving circuit for pressure generator

Info

Publication number
JPS57162008A
JPS57162008A JP4756381A JP4756381A JPS57162008A JP S57162008 A JPS57162008 A JP S57162008A JP 4756381 A JP4756381 A JP 4756381A JP 4756381 A JP4756381 A JP 4756381A JP S57162008 A JPS57162008 A JP S57162008A
Authority
JP
Japan
Prior art keywords
voltage
input
amplifier
noninversional
pulse
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
JP4756381A
Other languages
Japanese (ja)
Inventor
Hitoshi Tanaka
Shuji Morio
Kentaro Inoue
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.)
Azbil Corp
Original Assignee
Azbil 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 Azbil Corp filed Critical Azbil Corp
Priority to JP4756381A priority Critical patent/JPS57162008A/en
Publication of JPS57162008A publication Critical patent/JPS57162008A/en
Pending 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
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only

Landscapes

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

Abstract

PURPOSE:To execute a fail safe operation so that dangerous pressure is not generated, by constituting so that a pulse output is not sent to a transistor of the output side from an amplifier even if a pulse signal is applied, in case when a fault has occurred in a part related to a non-inversional input of the amplifier. CONSTITUTION:As for a voltage divider CRB, voltage VCC is applied through a resistance R3 from an electric power source and the other end is grounded, therefore, the voltage divider generates set voltage VSET obtained by dividing the voltage VCC, applies it to a noninversional input terminal, and feeds back output voltage Vf of an amplifier U2 to an inversional input terminal. In this case, a part related to this noninversional input becomes faulty, the noninversional input becomes an opened state, and input voltage of its input transistor TRQ3 rises up near the supply voltage VCC. When the TRQ3 is on, however, values of the resistances R3, R4 are selected so that voltage of the inversional input of the amplifier U2 does not exceed the noninversional input voltage, therefore, the amplifier U2 outputs no pulse even if a puls signal PS is applied to the base of the TRQ3. Accordingly, a load L is not driven by a pulse and pressure is not generated.
JP4756381A 1981-03-31 1981-03-31 Driving circuit for pressure generator Pending JPS57162008A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4756381A JPS57162008A (en) 1981-03-31 1981-03-31 Driving circuit for pressure generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4756381A JPS57162008A (en) 1981-03-31 1981-03-31 Driving circuit for pressure generator

Publications (1)

Publication Number Publication Date
JPS57162008A true JPS57162008A (en) 1982-10-05

Family

ID=12778678

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4756381A Pending JPS57162008A (en) 1981-03-31 1981-03-31 Driving circuit for pressure generator

Country Status (1)

Country Link
JP (1) JPS57162008A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4930945A (en) * 1988-05-20 1990-06-05 Mitsubishi Metal Corporation Insert rotary cutter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4930945A (en) * 1988-05-20 1990-06-05 Mitsubishi Metal Corporation Insert rotary cutter

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