HK1073731A1 - Method of forming a variable frequency oscillator and structure therefor - Google Patents

Method of forming a variable frequency oscillator and structure therefor

Info

Publication number
HK1073731A1
HK1073731A1 HK05106270.3A HK05106270A HK1073731A1 HK 1073731 A1 HK1073731 A1 HK 1073731A1 HK 05106270 A HK05106270 A HK 05106270A HK 1073731 A1 HK1073731 A1 HK 1073731A1
Authority
HK
Hong Kong
Prior art keywords
forming
variable frequency
frequency oscillator
structure therefor
therefor
Prior art date
Application number
HK05106270.3A
Other languages
English (en)
Inventor
Ivo Vecera
Petr Kadanka
Original Assignee
Semiconductor Components Ind
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 Semiconductor Components Ind filed Critical Semiconductor Components Ind
Publication of HK1073731A1 publication Critical patent/HK1073731A1/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/48—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices
    • H03K4/50—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor
    • H03K4/501—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor the starting point of the flyback period being determined by the amplitude of the voltage across the capacitor, e.g. by a comparator
    • H03K4/502—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor the starting point of the flyback period being determined by the amplitude of the voltage across the capacitor, e.g. by a comparator the capacitor being charged from a constant-current source
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/023—Generators characterised by the type of circuit or by the means used for producing pulses by the use of differential amplifiers or comparators, with internal or external positive feedback
    • H03K3/0231—Astable circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/01—Details
    • H03K3/015—Modifications of generator to maintain energy constant

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Pulse Circuits (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
HK05106270.3A 2003-08-18 2005-07-22 Method of forming a variable frequency oscillator and structure therefor HK1073731A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/642,539 US6954112B2 (en) 2003-08-18 2003-08-18 Method of forming a variable frequency oscillator and structure therefor

Publications (1)

Publication Number Publication Date
HK1073731A1 true HK1073731A1 (en) 2005-10-14

Family

ID=34063443

Family Applications (1)

Application Number Title Priority Date Filing Date
HK05106270.3A HK1073731A1 (en) 2003-08-18 2005-07-22 Method of forming a variable frequency oscillator and structure therefor

Country Status (5)

Country Link
US (1) US6954112B2 (xx)
EP (1) EP1508971A3 (xx)
CN (1) CN100433553C (xx)
HK (1) HK1073731A1 (xx)
TW (1) TWI358193B (xx)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4879240B2 (ja) * 2008-09-16 2012-02-22 株式会社リコー 発振回路、ｄｃ−ｄｃコンバータ及び半導体装置
JP5375753B2 (ja) * 2010-06-17 2013-12-25 ミツミ電機株式会社 発振回路及びその動作電流制御方法
DE102012201312B3 (de) * 2011-12-29 2013-02-07 Continental Automotive Gmbh Dreiecksignalgenerator und Pulsweitenmodulator mit einem solchen Dreiecksignalgenerator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4438670A1 (de) * 1994-10-28 1997-12-04 Sgs Thomson Microelectronics Steuerbarer Oszillator
JP3789258B2 (ja) * 1999-09-08 2006-06-21 日本電気株式会社 電圧制御発振器
US6501317B2 (en) * 2001-04-06 2002-12-31 Elantec Semiconductor, Inc. High speed, low-power CMOS circuit with constant output swing and variable time delay for a voltage controlled oscillator
US6683505B2 (en) * 2001-08-24 2004-01-27 Koninklijke Philips Electronics N.V. High speed voltage controlled oscillator

Also Published As

Publication number Publication date
EP1508971A3 (en) 2006-04-05
TW200511709A (en) 2005-03-16
EP1508971A2 (en) 2005-02-23
CN100433553C (zh) 2008-11-12
CN1585269A (zh) 2005-02-23
US6954112B2 (en) 2005-10-11
US20050040897A1 (en) 2005-02-24
TWI358193B (en) 2012-02-11

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20210817