BE878493A - Circuit d'impulsion a courant continu ajustable devant varier dans une plage predeterminee - Google Patents

Circuit d'impulsion a courant continu ajustable devant varier dans une plage predeterminee

Info

Publication number
BE878493A
BE878493A BE0/196932A BE196932A BE878493A BE 878493 A BE878493 A BE 878493A BE 0/196932 A BE0/196932 A BE 0/196932A BE 196932 A BE196932 A BE 196932A BE 878493 A BE878493 A BE 878493A
Authority
BE
Belgium
Prior art keywords
vary
direct current
predetermined range
current pulse
pulse circuit
Prior art date
Application number
BE0/196932A
Other languages
English (en)
Inventor
E Nuver
Original Assignee
Esquire Inc
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 Esquire Inc filed Critical Esquire Inc
Publication of BE878493A publication Critical patent/BE878493A/fr

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3924—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by phase control, e.g. using a triac
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/28—Modifications for introducing a time delay before switching
    • H03K17/292—Modifications for introducing a time delay before switching in thyristor, unijunction transistor or programmable unijunction transistor switches

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
BE0/196932A 1978-09-11 1979-08-29 Circuit d'impulsion a courant continu ajustable devant varier dans une plage predeterminee BE878493A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/941,157 US4204141A (en) 1978-09-11 1978-09-11 Adjustable DC pulse circuit for variation over a predetermined range using two timer networks

Publications (1)

Publication Number Publication Date
BE878493A true BE878493A (fr) 1979-12-17

Family

ID=25476020

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/196932A BE878493A (fr) 1978-09-11 1979-08-29 Circuit d'impulsion a courant continu ajustable devant varier dans une plage predeterminee

Country Status (10)

Country Link
US (1) US4204141A (fr)
AU (1) AU524900B2 (fr)
BE (1) BE878493A (fr)
CA (1) CA1114887A (fr)
DE (1) DE2936063A1 (fr)
ES (1) ES484035A0 (fr)
FR (1) FR2435859A1 (fr)
GB (1) GB2030386B (fr)
IT (1) IT7949816A0 (fr)
MX (1) MX147234A (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4358716A (en) * 1980-04-14 1982-11-09 White Castle System, Inc. Adjustable electrical power control for gas discharge lamps and the like
US4503364A (en) * 1982-09-02 1985-03-05 Cooper Industries, Inc. Programming and control device for modified lead ballast for HID lamps
EP0104264A1 (fr) * 1982-09-24 1984-04-04 White Castle System, Inc. Source de courant réglable pour lampes à décharge de gaz et pour lampes analogues
US4811193A (en) * 1983-05-04 1989-03-07 Fmc Corporation Variable frequency controller
US4686428A (en) * 1985-08-28 1987-08-11 Innovative Controls, Incorporated High intensity discharge lamp self-adjusting ballast system with current limiters and a current feedback loop
US4999547A (en) * 1986-09-25 1991-03-12 Innovative Controls, Incorporated Ballast for high pressure sodium lamps having constant line and lamp wattage
US5806055A (en) * 1996-12-19 1998-09-08 Zinda, Jr.; Kenneth L. Solid state ballast system for metal halide lighting using fuzzy logic control
US6157142A (en) * 1998-10-15 2000-12-05 Electro-Mag International, Inc. Hid ballast circuit with arc stabilization
US6194843B1 (en) 1999-01-29 2001-02-27 Electro-Mag International, Inc. HID ballast with hot restart circuit
US6946806B1 (en) 2000-06-22 2005-09-20 Microsemi Corporation Method and apparatus for controlling minimum brightness of a fluorescent lamp
US6307765B1 (en) 2000-06-22 2001-10-23 Linfinity Microelectronics Method and apparatus for controlling minimum brightness of a fluorescent lamp
US6583588B2 (en) * 2001-05-29 2003-06-24 Koninklijke Philips Electronics N.V. System and method of automatic cycling control for HID lamps
US6979959B2 (en) 2002-12-13 2005-12-27 Microsemi Corporation Apparatus and method for striking a fluorescent lamp
US7187139B2 (en) 2003-09-09 2007-03-06 Microsemi Corporation Split phase inverters for CCFL backlight system
US7183727B2 (en) 2003-09-23 2007-02-27 Microsemi Corporation Optical and temperature feedbacks to control display brightness
US7468722B2 (en) 2004-02-09 2008-12-23 Microsemi Corporation Method and apparatus to control display brightness with ambient light correction
US7112929B2 (en) 2004-04-01 2006-09-26 Microsemi Corporation Full-bridge and half-bridge compatible driver timing schedule for direct drive backlight system
US7755595B2 (en) 2004-06-07 2010-07-13 Microsemi Corporation Dual-slope brightness control for transflective displays
US7414371B1 (en) 2005-11-21 2008-08-19 Microsemi Corporation Voltage regulation loop with variable gain control for inverter circuit
US7569998B2 (en) 2006-07-06 2009-08-04 Microsemi Corporation Striking and open lamp regulation for CCFL controller
US8093839B2 (en) 2008-11-20 2012-01-10 Microsemi Corporation Method and apparatus for driving CCFL at low burst duty cycle rates
CN104134972B (zh) * 2014-06-20 2016-09-07 南京国电南自软件工程有限公司 一种防止电流互感器拖尾电流对断路器失灵保护影响的方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1116471A (en) * 1964-09-03 1968-06-06 English Electric Computers Ltd Electric pulse delay and regeneration circuits
US3602743A (en) * 1969-04-09 1971-08-31 Phillips Petroleum Co Circuit for producing an output pulse of predetermined width after a predetermined delay
US3816794A (en) * 1972-03-28 1974-06-11 Esquire Inc High intensity, gas discharge lamp dimmer system
US3894265A (en) * 1974-02-11 1975-07-08 Esquire Inc High intensity lamp dimming circuit
US3991343A (en) * 1976-01-07 1976-11-09 Henry Delpy Control circuit for progressively varying illumination intensity of lamps

Also Published As

Publication number Publication date
US4204141A (en) 1980-05-20
IT7949816A0 (it) 1979-07-20
FR2435859A1 (fr) 1980-04-04
AU5060279A (en) 1980-03-20
ES8102764A1 (es) 1980-09-01
GB2030386A (en) 1980-04-02
MX147234A (es) 1982-10-26
DE2936063A1 (de) 1980-03-20
CA1114887A (fr) 1981-12-22
ES484035A0 (es) 1980-09-01
AU524900B2 (en) 1982-10-07
GB2030386B (en) 1983-03-23

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: ESQUIRE INC.

Effective date: 19840829