JPS57139817A - Controller - Google Patents

Controller

Info

Publication number
JPS57139817A
JPS57139817A JP2444081A JP2444081A JPS57139817A JP S57139817 A JPS57139817 A JP S57139817A JP 2444081 A JP2444081 A JP 2444081A JP 2444081 A JP2444081 A JP 2444081A JP S57139817 A JPS57139817 A JP S57139817A
Authority
JP
Japan
Prior art keywords
frequency
smoothly
capacitor
oscillation frequency
period
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
JP2444081A
Other languages
Japanese (ja)
Inventor
Kiyou Yasue
Kenichi Tsunashima
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2444081A priority Critical patent/JPS57139817A/en
Publication of JPS57139817A publication Critical patent/JPS57139817A/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
    • G05B24/00—Open-loop automatic control systems not otherwise provided for

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)

Abstract

PURPOSE:To prevent a malfunction in case when frequency is switched, by partially varying an oscillation frequency of an IC having a fixed resistance and a capacitor which have been provided outside, optionally setting a time interval in its period, and also smoothly varying the frequency. CONSTITUTION:A period in which a level of an output terminal (a) becomes low and a terminal (b) becomes a high level is decided by an internal circuit of an IC1. This IC1 executes oscillation by an oscillation frequency corresponding to a time constant by resistances 2, 4, a capacitor 3 and a transistor (TR) 5, which have been provided outside. Outputs of the terminals (a), (b) are converted to inverted outputs by an NOR gate 6 and an inverter 7. Subsequently, base voltage of the TR5 is varied smoothly by an integration circuit consisting of resistances 8, 9 and a capacitor 10, and the oscillation frequency of th IC1 is decreased smoothly. Accordingly, it is possible not only to optionally set the oscillation frequency of the IC1 and its period longer than a regular time interval by values of each resistance and condenser, but also to switch the frequency smoothly.
JP2444081A 1981-02-20 1981-02-20 Controller Pending JPS57139817A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2444081A JPS57139817A (en) 1981-02-20 1981-02-20 Controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2444081A JPS57139817A (en) 1981-02-20 1981-02-20 Controller

Publications (1)

Publication Number Publication Date
JPS57139817A true JPS57139817A (en) 1982-08-30

Family

ID=12138198

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2444081A Pending JPS57139817A (en) 1981-02-20 1981-02-20 Controller

Country Status (1)

Country Link
JP (1) JPS57139817A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6238610U (en) * 1985-08-23 1987-03-07
CN106026745A (en) * 2016-05-20 2016-10-12 广东百事泰电子商务股份有限公司 Control chip for photovoltaic inverter integrated system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6238610U (en) * 1985-08-23 1987-03-07
JPH0514249Y2 (en) * 1985-08-23 1993-04-16
CN106026745A (en) * 2016-05-20 2016-10-12 广东百事泰电子商务股份有限公司 Control chip for photovoltaic inverter integrated system

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