GB2247123B - Duty cycle modulator circuit - Google Patents

Duty cycle modulator circuit

Info

Publication number
GB2247123B
GB2247123B GB9115649A GB9115649A GB2247123B GB 2247123 B GB2247123 B GB 2247123B GB 9115649 A GB9115649 A GB 9115649A GB 9115649 A GB9115649 A GB 9115649A GB 2247123 B GB2247123 B GB 2247123B
Authority
GB
United Kingdom
Prior art keywords
duty cycle
modulator circuit
cycle modulator
circuit
duty
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.)
Expired - Fee Related
Application number
GB9115649A
Other versions
GB2247123A (en
GB9115649D0 (en
Inventor
Rodney T Burt
Robert M Stitt
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.)
Texas Instruments Tucson Corp
Original Assignee
Burr Brown 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
Priority claimed from US07/114,654 external-priority patent/US4843339A/en
Application filed by Burr Brown Corp filed Critical Burr Brown Corp
Publication of GB9115649D0 publication Critical patent/GB9115649D0/en
Publication of GB2247123A publication Critical patent/GB2247123A/en
Application granted granted Critical
Publication of GB2247123B publication Critical patent/GB2247123B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C27/00—Electric analogue stores, e.g. for storing instantaneous values
    • G11C27/02—Sample-and-hold arrangements
    • G11C27/024—Sample-and-hold arrangements using a capacitive memory element
    • G11C27/026—Sample-and-hold arrangements using a capacitive memory element associated with an amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/38—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers
    • H03F3/387—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers with semiconductor devices only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K9/00—Demodulating pulses which have been modulated with a continuously-variable signal
    • H03K9/08—Demodulating pulses which have been modulated with a continuously-variable signal of duration- or width-mudulated pulses or of duty-cycle modulated pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
GB9115649A 1987-10-28 1991-07-18 Duty cycle modulator circuit Expired - Fee Related GB2247123B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/114,654 US4843339A (en) 1987-10-28 1987-10-28 Isolation amplifier including precision voltage-to-duty-cycle converter and low ripple, high bandwidth charge balance demodulator
GB8813750A GB2211687B (en) 1987-10-28 1988-06-10 Isolation amplifier including precision voltage-to-duty-cycle converter and low ripple, high bandwidth charge balance demodulator

Publications (3)

Publication Number Publication Date
GB9115649D0 GB9115649D0 (en) 1991-09-04
GB2247123A GB2247123A (en) 1992-02-19
GB2247123B true GB2247123B (en) 1992-07-01

Family

ID=26293998

Family Applications (3)

Application Number Title Priority Date Filing Date
GB9115649A Expired - Fee Related GB2247123B (en) 1987-10-28 1991-07-18 Duty cycle modulator circuit
GB9115650A Expired - Fee Related GB2247124B (en) 1987-10-28 1991-07-18 Demodulator circuit
GB9117550A Expired - Fee Related GB2247120B (en) 1987-10-28 1991-08-14 Sample and hold circuit

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB9115650A Expired - Fee Related GB2247124B (en) 1987-10-28 1991-07-18 Demodulator circuit
GB9117550A Expired - Fee Related GB2247120B (en) 1987-10-28 1991-08-14 Sample and hold circuit

Country Status (1)

Country Link
GB (3) GB2247123B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9312377D0 (en) * 1993-06-16 1993-07-28 Smiths Industries Plc Signal processing
DE102004016073B4 (en) 2004-03-30 2010-12-23 Texas Instruments Deutschland Gmbh A method of generating a pulse output signal from a periodic sawtooth signal and a reference voltage, and a clocked current transformer
CN101253575B (en) * 2005-07-01 2010-11-03 剑桥模拟技术有限公司 Sampled-data circuits using zero crossing detection
US7459942B2 (en) 2005-07-01 2008-12-02 Cambridge Analog Technologies, Inc. Sampled-data circuits using zero crossing detection
US7522086B2 (en) 2005-12-29 2009-04-21 Cambridge Analog Technologies, Inc. Reference circuits for sampled-data circuits
US7504866B2 (en) 2005-12-29 2009-03-17 Cambridge Analog Technologies, Inc. Output hold circuits for sample-data circuits
US9374105B2 (en) 2014-04-09 2016-06-21 Linear Technology Corporation Converting time-encoded signal into analog output
WO2016019964A1 (en) * 2014-08-08 2016-02-11 Pr Electronics A/S System and method for modulation and demodulation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2195873A1 (en) * 1972-08-08 1974-03-08 Dba
US3876949A (en) * 1971-10-05 1975-04-08 Commissariat Energie Atomique Phase-shift cell and a phase shifter for the application of said cell
GB1494146A (en) * 1974-05-30 1977-12-07 Western Electric Co Modulator circuit arrangement
WO1986007219A1 (en) * 1985-05-22 1986-12-04 Plessey Overseas Limited Phase modulators

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3876949A (en) * 1971-10-05 1975-04-08 Commissariat Energie Atomique Phase-shift cell and a phase shifter for the application of said cell
FR2195873A1 (en) * 1972-08-08 1974-03-08 Dba
GB1494146A (en) * 1974-05-30 1977-12-07 Western Electric Co Modulator circuit arrangement
WO1986007219A1 (en) * 1985-05-22 1986-12-04 Plessey Overseas Limited Phase modulators

Also Published As

Publication number Publication date
GB2247124A (en) 1992-02-19
GB2247120B (en) 1992-07-01
GB2247123A (en) 1992-02-19
GB2247124B (en) 1992-07-01
GB9115650D0 (en) 1991-09-04
GB9117550D0 (en) 1991-10-02
GB2247120A (en) 1992-02-19
GB9115649D0 (en) 1991-09-04

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950610