NZ502153A - Triac switching circuit in parallel with biased transistor circuit for lamp dimmer - Google Patents

Triac switching circuit in parallel with biased transistor circuit for lamp dimmer

Info

Publication number
NZ502153A
NZ502153A NZ502153A NZ50215398A NZ502153A NZ 502153 A NZ502153 A NZ 502153A NZ 502153 A NZ502153 A NZ 502153A NZ 50215398 A NZ50215398 A NZ 50215398A NZ 502153 A NZ502153 A NZ 502153A
Authority
NZ
New Zealand
Prior art keywords
circuit
parallel
triac
lamp dimmer
biased transistor
Prior art date
Application number
NZ502153A
Inventor
Koichi Hayashi
Original Assignee
H
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 H filed Critical H
Publication of NZ502153A publication Critical patent/NZ502153A/en

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
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/04—Controlling
    • H05B39/08—Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor devices

Landscapes

  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

In a lamp dimmer circuit the triac 10 is periodically gated on by gate circuit 13 to control the flow of ac current through the lamp 26. When the triac is non-conducting the transistor 14, in parallel with the triac, is biased on by bias circuit 16 to permit a current, less than the holding or latching current of the triac, to flow to the lamp.
NZ502153A 1997-07-09 1998-07-06 Triac switching circuit in parallel with biased transistor circuit for lamp dimmer NZ502153A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPO7789A AUPO778997A0 (en) 1997-07-09 1997-07-09 Solid state switching device circuit
PCT/AU1998/000518 WO1999003027A1 (en) 1997-07-09 1998-07-06 Solid state switching device circuit

Publications (1)

Publication Number Publication Date
NZ502153A true NZ502153A (en) 2001-01-26

Family

ID=3802078

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ502153A NZ502153A (en) 1997-07-09 1998-07-06 Triac switching circuit in parallel with biased transistor circuit for lamp dimmer

Country Status (4)

Country Link
AU (1) AUPO778997A0 (en)
GB (1) GB2341990B (en)
NZ (1) NZ502153A (en)
WO (1) WO1999003027A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1719963A (en) * 2004-07-08 2006-01-11 皇家飞利浦电子股份有限公司 Light modulating device
ITMI20050638A1 (en) * 2005-04-14 2006-10-15 Vimar Spa POWER SUPPLY REGULATOR DEVICE

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3855482A (en) * 1972-09-05 1974-12-17 Borg Warner Solid state switching system for coupling an ac power supply to a load
US4097769A (en) * 1976-11-05 1978-06-27 Electro Corporation Circuit for controllably providing power from an AC source to a load
AU559844B2 (en) * 1980-08-04 1987-03-19 Middendorp Engineering Co. Proprietary Limited Electrical switching device
DE3743556A1 (en) * 1987-12-22 1989-07-13 Asea Brown Boveri CIRCUIT ARRANGEMENT FOR CONTROLLING A PERFORMANCE TRACE

Also Published As

Publication number Publication date
GB2341990B (en) 2001-06-13
AUPO778997A0 (en) 1997-07-31
GB0000325D0 (en) 2000-03-01
WO1999003027A1 (en) 1999-01-21
GB2341990A (en) 2000-03-29

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