GB1478804A - Class d amplifiers - Google Patents

Class d amplifiers

Info

Publication number
GB1478804A
GB1478804A GB5499/75A GB549975A GB1478804A GB 1478804 A GB1478804 A GB 1478804A GB 5499/75 A GB5499/75 A GB 5499/75A GB 549975 A GB549975 A GB 549975A GB 1478804 A GB1478804 A GB 1478804A
Authority
GB
United Kingdom
Prior art keywords
transistors
transistor
diode
class
conductive
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
Application number
GB5499/75A
Other languages
English (en)
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.)
RCA Corp
Original Assignee
RCA 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 RCA Corp filed Critical RCA Corp
Publication of GB1478804A publication Critical patent/GB1478804A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • 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
    • 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
    • H03K4/60—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 current is produced through an inductor
    • H03K4/62—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 current is produced through an inductor using a semiconductor device operating as a switching device
    • H03K4/625—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 current is produced through an inductor using a semiconductor device operating as a switching device using pulse-modulation techniques for the generation of the sawtooth wave, e.g. class D, switched mode
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)
  • Amplifiers (AREA)
GB5499/75A 1974-02-21 1975-02-10 Class d amplifiers Expired GB1478804A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/444,405 US3939380A (en) 1974-02-21 1974-02-21 Class D amplifier

Publications (1)

Publication Number Publication Date
GB1478804A true GB1478804A (en) 1977-07-06

Family

ID=23764739

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5499/75A Expired GB1478804A (en) 1974-02-21 1975-02-10 Class d amplifiers

Country Status (17)

Country Link
US (1) US3939380A ( )
JP (1) JPS50120516A ( )
AR (1) AR202965A1 ( )
BE (1) BE825770A ( )
BR (1) BR7500901A ( )
CA (1) CA1029849A ( )
DD (1) DD116363A5 ( )
DE (1) DE2507528A1 ( )
DK (1) DK63475A ( )
ES (1) ES434938A1 ( )
FI (1) FI750418A ( )
FR (1) FR2262442B1 ( )
GB (1) GB1478804A ( )
IT (1) IT1031554B ( )
NL (1) NL7415986A ( )
SE (1) SE395207B ( )
ZA (1) ZA75948B ( )

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5731708B2 ( ) * 1974-06-04 1982-07-06
CA1031069A (en) * 1974-11-13 1978-05-09 Shigeru Enomoto Vertical deflection circuit
GB1528981A (en) * 1975-02-20 1978-10-18 Rca Corp Deflection system such as for television receivers including a switched mode vertical(field)reflection circuit
IE41941B1 (en) * 1975-02-20 1980-04-23 Rca Corp Deflection system such as for television receivers including a switched mode vertical (field) deflection circuit
US4097815A (en) * 1975-04-09 1978-06-27 Indesit Industria Elettrodomestici Italiana S.P.A. Amplifying circuit
GB1568402A (en) * 1976-03-19 1980-05-29 Rca Corp Switched mode deflection amplifier with elimination of feedback ringing
GB1574726A (en) * 1976-03-19 1980-09-10 Rca Corp Side pincushion distortion correction circuit
GB1574601A (en) * 1976-04-26 1980-09-10 Rca Corp Undersirable modulation reduction of deflection circuit
US4206316A (en) * 1976-05-24 1980-06-03 Hughes Aircraft Company Transmitter-receiver system utilizing pulse position modulation and pulse compression
DE2712052C2 (de) * 1977-03-18 1985-06-27 Standard Elektrik Lorenz Ag, 7000 Stuttgart Vertikalablenkschaltung
FR2438395A1 (fr) * 1978-07-27 1980-04-30 Thomson Brandt Circuit de balayage trame en mode commute, et recepteur video-frequence equipe d'un tel circuit
FR2458966A1 (fr) * 1979-06-07 1981-01-02 Thomson Brandt Circuit de commande de balayage trame en mode commute pour recepteur videofrequence
FR2473238A1 (fr) * 1980-01-08 1981-07-10 Thomson Brandt Circuit de commande pour circuit en mode commute, et notamment pour circuit de balayage trame d'un recepteur videofrequence
US4338549A (en) * 1980-03-20 1982-07-06 Rca Corporation Vertical deflection circuit
US4727874A (en) * 1984-09-10 1988-03-01 C. R. Bard, Inc. Electrosurgical generator with high-frequency pulse width modulated feedback power control
DE3814563A1 (de) * 1988-04-29 1989-11-09 Thomson Brandt Gmbh Verfahren zur korrektur von geometrieverzerrungen auf dem bildschirm einer kathodenstrahlroehre
US4992749A (en) * 1988-12-28 1991-02-12 Pioneer Electronic Corporation Pulse-width modulating amplifier circuit
US4926098A (en) * 1989-09-19 1990-05-15 Zenith Electronics Corporation Push-pull class-E bi-directional scanning circuit
US4999549A (en) * 1990-04-27 1991-03-12 Rca Licensing Corporation Switched mode vertical deflection system and control circuit
US6469919B1 (en) 1999-07-22 2002-10-22 Eni Technology, Inc. Power supplies having protection circuits
US7180758B2 (en) * 1999-07-22 2007-02-20 Mks Instruments, Inc. Class E amplifier with inductive clamp
US6441685B1 (en) 2000-03-17 2002-08-27 Jl Audio, Inc. Amplifier circuit and method for providing negative feedback thereto
US7362182B2 (en) * 2005-08-31 2008-04-22 Ge Security, Inc. Power amplifier
US8344801B2 (en) 2010-04-02 2013-01-01 Mks Instruments, Inc. Variable class characteristic amplifier
US9214901B2 (en) 2012-07-27 2015-12-15 Mks Instruments, Inc. Wideband AFT power amplifier systems with frequency-based output transformer impedance balancing
EP3506498B1 (en) 2017-12-29 2021-03-17 Honeywell International Inc. Increased audio power output amplifier configuration including fault tolerance suitable for use in alarm system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3015781A (en) * 1957-10-30 1962-01-02 Eklov David Device for the protection of electrical apparatus against excess voltage
US3336538A (en) * 1964-08-13 1967-08-15 Norman H Crowhurst Two-state power amplifier with transitional feedback
US3548329A (en) * 1969-05-09 1970-12-15 Mallory & Co Inc P R Two-state amplifier
US3636380A (en) * 1970-09-04 1972-01-18 Us Navy Power amplifier
DE2058631C3 (de) * 1970-11-28 1975-12-04 Philips Patentverwaltung Gmbh, 2000 Hamburg Vertikalablenkschaltung

Also Published As

Publication number Publication date
AR202965A1 (es) 1975-07-31
DD116363A5 ( ) 1975-11-12
AU7824575A (en) 1976-08-19
BR7500901A (pt) 1975-12-02
BE825770A (fr) 1975-06-16
SE395207B (sv) 1977-08-01
SE7501644L ( ) 1975-08-22
FR2262442A1 ( ) 1975-09-19
JPS50120516A ( ) 1975-09-20
IT1031554B (it) 1979-05-10
FR2262442B1 ( ) 1979-07-06
FI750418A ( ) 1975-08-22
CA1029849A (en) 1978-04-18
ZA75948B (en) 1976-01-28
US3939380A (en) 1976-02-17
NL7415986A (nl) 1975-08-25
DE2507528A1 (de) 1975-08-28
ES434938A1 (es) 1976-12-16
DK63475A ( ) 1975-10-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee