JPS57169828A - Overcurrent protecting circuit of constant voltage source - Google Patents

Overcurrent protecting circuit of constant voltage source

Info

Publication number
JPS57169828A
JPS57169828A JP5503481A JP5503481A JPS57169828A JP S57169828 A JPS57169828 A JP S57169828A JP 5503481 A JP5503481 A JP 5503481A JP 5503481 A JP5503481 A JP 5503481A JP S57169828 A JPS57169828 A JP S57169828A
Authority
JP
Japan
Prior art keywords
circuit
overcurrent
output
signal
time
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
JP5503481A
Other languages
Japanese (ja)
Inventor
Keiichi Sugiyama
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP5503481A priority Critical patent/JPS57169828A/en
Publication of JPS57169828A publication Critical patent/JPS57169828A/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
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/565—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
    • G05F1/569—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection
    • G05F1/573—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection with overcurrent detector

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

PURPOSE:To realize a protecting circuit that has no overheat although an overcurrent lasts long and can attain the miniaturization of a device, by using an output intermitting circuit containing a means which integrates the overcurrent signal and a time circuit which starts with the integral signal. CONSTITUTION:An output intermitting circuit contains a means 14 which integrates an overcurrent signal and a time circuit 15 which starts with the integral signal. For instance, a constant current circuit consisting of an overcurrent detecting resistance 10, an overcurrent signal detector 11, an amplifier 12 and a control transistor 5 is set to a constant voltage circuit comprising an output voltage detector 7, a comparing amplifier 9, a reference power supply 8, a control transistor, etc. Furthermore, an output intermitting circuit consists of an overcurrent signal detector 13, an integral network 14, a time circuit 15, an intermediate amplifier 16 and a control transistor 5. Thus the output current is cut off when an overcurrent flows, and self-resetting is ensured in a certain period of time.
JP5503481A 1981-04-14 1981-04-14 Overcurrent protecting circuit of constant voltage source Pending JPS57169828A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5503481A JPS57169828A (en) 1981-04-14 1981-04-14 Overcurrent protecting circuit of constant voltage source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5503481A JPS57169828A (en) 1981-04-14 1981-04-14 Overcurrent protecting circuit of constant voltage source

Publications (1)

Publication Number Publication Date
JPS57169828A true JPS57169828A (en) 1982-10-19

Family

ID=12987366

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5503481A Pending JPS57169828A (en) 1981-04-14 1981-04-14 Overcurrent protecting circuit of constant voltage source

Country Status (1)

Country Link
JP (1) JPS57169828A (en)

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