JPS6477308A - High frequency power control system - Google Patents

High frequency power control system

Info

Publication number
JPS6477308A
JPS6477308A JP23383287A JP23383287A JPS6477308A JP S6477308 A JPS6477308 A JP S6477308A JP 23383287 A JP23383287 A JP 23383287A JP 23383287 A JP23383287 A JP 23383287A JP S6477308 A JPS6477308 A JP S6477308A
Authority
JP
Japan
Prior art keywords
level
detecting
coupling
output signal
control
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
JP23383287A
Other languages
Japanese (ja)
Inventor
Hirotada Tanaka
Yukio Yokoyama
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP23383287A priority Critical patent/JPS6477308A/en
Publication of JPS6477308A publication Critical patent/JPS6477308A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/12—Esters of monohydric alcohols or phenols

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To expand the variable range of level control by using two coupling circuits having different degrees of coupling and two detecting circuits to obtain two detecting voltages and switching the two detecting outputs in accordance with a level for controlling an output signal. CONSTITUTION:The degree of coupling of the coupling circuit 2 is set up so as to be slightly lower than the lower limit of a level to control an output signal SO. On the other hand, the degree of coupling of the coupling circuit 3 is set up so that a detecting voltage VD2 is almost equal to a detecting voltage VD1 at a level PC2 in which the voltage VD2 is not sharply changed even if the level of the output signal SO is changed. When the level to control the output signal SO is about the level PC2 or lower than it, a switching signal CS1 allows a change-over switch 6 to select the detecting voltage Vs1. When said level is larger than the level PC2, the switch 6 is allowed to select the detecting voltage VS2. Consequently, a detecting voltage to be inputted to a comparator can be reduced over the whole range of level control.
JP23383287A 1987-09-18 1987-09-18 High frequency power control system Pending JPS6477308A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23383287A JPS6477308A (en) 1987-09-18 1987-09-18 High frequency power control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23383287A JPS6477308A (en) 1987-09-18 1987-09-18 High frequency power control system

Publications (1)

Publication Number Publication Date
JPS6477308A true JPS6477308A (en) 1989-03-23

Family

ID=16961263

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23383287A Pending JPS6477308A (en) 1987-09-18 1987-09-18 High frequency power control system

Country Status (1)

Country Link
JP (1) JPS6477308A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03171913A (en) * 1989-11-30 1991-07-25 Nec Corp Power amplifying circuit
EP0528689A2 (en) * 1991-08-20 1993-02-24 Nec Corporation Detector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03171913A (en) * 1989-11-30 1991-07-25 Nec Corp Power amplifying circuit
EP0528689A2 (en) * 1991-08-20 1993-02-24 Nec Corporation Detector
EP0528689A3 (en) * 1991-08-20 1993-12-22 Nec Corp Detector

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