JPS5790732A - Power supply circuit for microprocessor - Google Patents

Power supply circuit for microprocessor

Info

Publication number
JPS5790732A
JPS5790732A JP55168413A JP16841380A JPS5790732A JP S5790732 A JPS5790732 A JP S5790732A JP 55168413 A JP55168413 A JP 55168413A JP 16841380 A JP16841380 A JP 16841380A JP S5790732 A JPS5790732 A JP S5790732A
Authority
JP
Japan
Prior art keywords
power supply
circuit
voltage
output
microprocessor
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
JP55168413A
Other languages
Japanese (ja)
Inventor
Tadakazu Shiraishi
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.)
Pioneer Corp
Original Assignee
Pioneer Corp
Pioneer Electronic 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 Pioneer Corp, Pioneer Electronic Corp filed Critical Pioneer Corp
Priority to JP55168413A priority Critical patent/JPS5790732A/en
Publication of JPS5790732A publication Critical patent/JPS5790732A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Power Sources (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To prevent the malfunction of a microprocessor which is caused by the voltage fluctuation of a power supply, by restarting the operation of a constant voltage circuit after a delay time in case the output voltage of a DC power supply is recovered from the improper state to the proper state. CONSTITUTION:A constant voltage circuit 14 compensates the voltage fluctuation of a DC power supply 11 and supplies the constant voltage to a microprocessor 15. A DC-DC converter 16 inverts the polarity of the output of the circuit 14 and supplies the constant voltage of a different polarity to the processor 15. Furthermore, a monitor circuit 17 detects whether the output voltage of the power supply is higher than the reference value. And a control circuit 18 sets the output of the circuit 14 at a level lower than the inactive voltage of the processor 15 when the output voltage of the power supply 11 is improper and delivers the constant voltage from the circuit 14 after a delay time longer than the time required for the stoppage of the operation of the converter 16 when the output voltage of the power supply 11 is recovered from the improper state to the proper state.
JP55168413A 1980-11-28 1980-11-28 Power supply circuit for microprocessor Pending JPS5790732A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55168413A JPS5790732A (en) 1980-11-28 1980-11-28 Power supply circuit for microprocessor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55168413A JPS5790732A (en) 1980-11-28 1980-11-28 Power supply circuit for microprocessor

Publications (1)

Publication Number Publication Date
JPS5790732A true JPS5790732A (en) 1982-06-05

Family

ID=15867658

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55168413A Pending JPS5790732A (en) 1980-11-28 1980-11-28 Power supply circuit for microprocessor

Country Status (1)

Country Link
JP (1) JPS5790732A (en)

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