JPS57135672A - Phase control circuit - Google Patents

Phase control circuit

Info

Publication number
JPS57135672A
JPS57135672A JP2060681A JP2060681A JPS57135672A JP S57135672 A JPS57135672 A JP S57135672A JP 2060681 A JP2060681 A JP 2060681A JP 2060681 A JP2060681 A JP 2060681A JP S57135672 A JPS57135672 A JP S57135672A
Authority
JP
Japan
Prior art keywords
current
circuit
voltage
source
becomes
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
JP2060681A
Other languages
Japanese (ja)
Inventor
Sadahiro Shimada
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 JP2060681A priority Critical patent/JPS57135672A/en
Publication of JPS57135672A publication Critical patent/JPS57135672A/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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/25—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M5/257—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M5/2573—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit

Abstract

PURPOSE:To effectively perform power control by phase control by achieving a charging circuit to a capacitor of a gate trigger circuit by a variable current type constant-current source. CONSTITUTION:A current flowing in a circuit when a power source 1 is in positive half cycle depends upon an FET6 and a variable resistor 7, and the voltage between the gate and the source of the FET6 becomes a current flowing through a circuit of VGS=-R7.I0.R7, resistance of variable resistor 7 and I0. Accordingly, when the voltage applied to the circuit becomes high, the voltage VGS becomes high at the negative side, thereby acting to reduce the current. According- ly, the current I0 does not vary. Similarly, when the power source 1 is in negative half cycle, the current I0 does not change. As a consequence, the current which charges the capacitor 5 becomes constant, the conduction angle theta does not alter, thereby reducing the variation in the power due to the variation in the voltage.
JP2060681A 1981-02-13 1981-02-13 Phase control circuit Pending JPS57135672A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2060681A JPS57135672A (en) 1981-02-13 1981-02-13 Phase control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2060681A JPS57135672A (en) 1981-02-13 1981-02-13 Phase control circuit

Publications (1)

Publication Number Publication Date
JPS57135672A true JPS57135672A (en) 1982-08-21

Family

ID=12031918

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2060681A Pending JPS57135672A (en) 1981-02-13 1981-02-13 Phase control circuit

Country Status (1)

Country Link
JP (1) JPS57135672A (en)

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