JPS5692601A - Control circuit for air-conditioner - Google Patents

Control circuit for air-conditioner

Info

Publication number
JPS5692601A
JPS5692601A JP16932179A JP16932179A JPS5692601A JP S5692601 A JPS5692601 A JP S5692601A JP 16932179 A JP16932179 A JP 16932179A JP 16932179 A JP16932179 A JP 16932179A JP S5692601 A JPS5692601 A JP S5692601A
Authority
JP
Japan
Prior art keywords
power supply
photocoupler
rectifying circuit
circuit
rectifying
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
JP16932179A
Other languages
Japanese (ja)
Inventor
Shintaro Masuda
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP16932179A priority Critical patent/JPS5692601A/en
Publication of JPS5692601A publication Critical patent/JPS5692601A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/50—Machine tool, machine tool null till machine tool work handling
    • G05B2219/50008—Multiple, multi tool head, parallel machining
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/50—Machine tool, machine tool null till machine tool work handling
    • G05B2219/50204—Tool replacement point, tool change position without damage, clearance plane

Landscapes

  • Air Conditioning Control Device (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE: To ensure the operation even with a power supply of low voltage and to increase the reliability, by connecting a rectifying circuit in series with a protective device and connecting a smoothing circuit between a photodetection transistor of a photocoupler connected to the rectifying circuit and the power supply.
CONSTITUTION: A rectifying circuit D forms a bridge with rectifying diodes and it is connected in series with the protective device such as a high pressure switch 63H, internal thermostat 49C and overcurrent relay 51C. A photocoupler PC is connected to the DC output of the rectifying circuit D. Further, a smoothing circuit consisting of a parallel connection of a resistor R1 and a capacitor C is connected between the collector of the photodetection transistor of a photocoupler PC and the power supply, and this smoothing circuit is connected to the input side of a microcomputer M. With the constitution like this, the operation is ensured even with a low voltage power supply, allowing to increase the reliability.
COPYRIGHT: (C)1981,JPO&Japio
JP16932179A 1979-12-27 1979-12-27 Control circuit for air-conditioner Pending JPS5692601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16932179A JPS5692601A (en) 1979-12-27 1979-12-27 Control circuit for air-conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16932179A JPS5692601A (en) 1979-12-27 1979-12-27 Control circuit for air-conditioner

Publications (1)

Publication Number Publication Date
JPS5692601A true JPS5692601A (en) 1981-07-27

Family

ID=15884370

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16932179A Pending JPS5692601A (en) 1979-12-27 1979-12-27 Control circuit for air-conditioner

Country Status (1)

Country Link
JP (1) JPS5692601A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59231344A (en) * 1983-06-15 1984-12-26 Hitachi Ltd Control circuit for air conditioner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59231344A (en) * 1983-06-15 1984-12-26 Hitachi Ltd Control circuit for air conditioner
JPH0361100B2 (en) * 1983-06-15 1991-09-18 Hitachi Ltd

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