JPS57113121A - Alternating-current stabilized power source - Google Patents

Alternating-current stabilized power source

Info

Publication number
JPS57113121A
JPS57113121A JP18865280A JP18865280A JPS57113121A JP S57113121 A JPS57113121 A JP S57113121A JP 18865280 A JP18865280 A JP 18865280A JP 18865280 A JP18865280 A JP 18865280A JP S57113121 A JPS57113121 A JP S57113121A
Authority
JP
Japan
Prior art keywords
voltage
power source
load
control
ver
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
JP18865280A
Other languages
Japanese (ja)
Inventor
Hideyasu Endo
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP18865280A priority Critical patent/JPS57113121A/en
Publication of JPS57113121A publication Critical patent/JPS57113121A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/12—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC
    • G05F1/40—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices
    • G05F1/44—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only
    • G05F1/45—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
    • G05F1/455—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load with phase control

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Voltage And Current In General (AREA)

Abstract

PURPOSE:To eliminate erroneous ignition with simple circuit constitution which has less parts, by obtaining a signal which determines a control phase angle by comparing a sawtooth wave voltage, synchronizing with a power source, with a control signal. CONSTITUTION:A load voltage VL applied to a load 45 with its phase controlled is processed by full-wave rectification at a diode bridge DB1, and the result is applied to an effective-value detecting circuit 41 to be converted into a DC voltage VL'' close to the effective value of the load voltage VL. Then, it is inputted to a differential amplifier 47 together with a reference voltage VREF for output setting to output an error voltage VER. After the full-wave rectification of a diode bridge DB2, electric power from an AC power source 46 is applied to a circuit 42 to generate a saw-tooth wave VT which synchronizes with the power source 46. This sawtooth wave VT and voltage VER are compared 43 and only when VT<=VER, a high-level signal Sc is outputted to turn on the light emitting diode of a photocoupler PS. Consequently, the semiconductor phase control element Q3 of a conduction energizing circuit 44 is turned on to apply the load 45 with a control voltage which is brought under constant phase control.
JP18865280A 1980-12-30 1980-12-30 Alternating-current stabilized power source Pending JPS57113121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18865280A JPS57113121A (en) 1980-12-30 1980-12-30 Alternating-current stabilized power source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18865280A JPS57113121A (en) 1980-12-30 1980-12-30 Alternating-current stabilized power source

Publications (1)

Publication Number Publication Date
JPS57113121A true JPS57113121A (en) 1982-07-14

Family

ID=16227461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18865280A Pending JPS57113121A (en) 1980-12-30 1980-12-30 Alternating-current stabilized power source

Country Status (1)

Country Link
JP (1) JPS57113121A (en)

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