JPS57212397A - Electric fan - Google Patents

Electric fan

Info

Publication number
JPS57212397A
JPS57212397A JP9730481A JP9730481A JPS57212397A JP S57212397 A JPS57212397 A JP S57212397A JP 9730481 A JP9730481 A JP 9730481A JP 9730481 A JP9730481 A JP 9730481A JP S57212397 A JPS57212397 A JP S57212397A
Authority
JP
Japan
Prior art keywords
fan
circuit section
control circuit
stopping
section
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.)
Granted
Application number
JP9730481A
Other languages
Japanese (ja)
Other versions
JPH0259319B2 (en
Inventor
Hirokuni Ikeda
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP9730481A priority Critical patent/JPS57212397A/en
Publication of JPS57212397A publication Critical patent/JPS57212397A/en
Publication of JPH0259319B2 publication Critical patent/JPH0259319B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/093—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against increase beyond, or decrease below, a predetermined level of rotational speed

Landscapes

  • Control Of Positive-Displacement Air Blowers (AREA)

Abstract

PURPOSE:To prevent failure of turning off an electric fan, by providing a means for stopping operation of the fan automatically in case that operation of the fan is continued for a predetermined while after final manipulation of an operation controlling switch is completed. CONSTITUTION:A control circuit for an electric fan of this invention is composed of a power source circuit section 1, motor driving circuit section 2, waveform shaping circuit section 3, reset-signal generating circuit section 4, first control circuit section 5, second control circuit section 6, displaying crcuit section 7, automatic-stop circuit section 8 and a micro computor IC3. The computor IC3 has 28 pins and a ROM capacity of 1k byte and is capable of processing various circuit signals. The control circuit is arranged to be capable of performing timer control, oscillating and intermittent operations, and combined operation of the fan and also to be capable of stopping operation of the fan automatically irrespective of the mode of operation. Further, the control circuit is designed to be capable of changing the time required for the automatic stopping of the fan by means of a variable resistor VR and to be capable of performing timer controlled operation by the steps of 20min independently to a time length of 120min. Therefore, if the automatic stopping means is always kept ready for operation by turning a manual switch SW9 to the side of a contact (a), it is enabled to stop operation of the fan automatically even if the user fails to set the timer.
JP9730481A 1981-06-22 1981-06-22 Electric fan Granted JPS57212397A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9730481A JPS57212397A (en) 1981-06-22 1981-06-22 Electric fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9730481A JPS57212397A (en) 1981-06-22 1981-06-22 Electric fan

Publications (2)

Publication Number Publication Date
JPS57212397A true JPS57212397A (en) 1982-12-27
JPH0259319B2 JPH0259319B2 (en) 1990-12-12

Family

ID=14188741

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9730481A Granted JPS57212397A (en) 1981-06-22 1981-06-22 Electric fan

Country Status (1)

Country Link
JP (1) JPS57212397A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61145397A (en) * 1984-12-20 1986-07-03 Sanyo Electric Co Ltd Motor fan

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4814458U (en) * 1971-07-05 1973-02-17

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4814458B1 (en) * 1969-08-11 1973-05-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4814458U (en) * 1971-07-05 1973-02-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61145397A (en) * 1984-12-20 1986-07-03 Sanyo Electric Co Ltd Motor fan

Also Published As

Publication number Publication date
JPH0259319B2 (en) 1990-12-12

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