TW200706069A - Electronic ballast with constant current control - Google Patents

Electronic ballast with constant current control

Info

Publication number
TW200706069A
TW200706069A TW094124400A TW94124400A TW200706069A TW 200706069 A TW200706069 A TW 200706069A TW 094124400 A TW094124400 A TW 094124400A TW 94124400 A TW94124400 A TW 94124400A TW 200706069 A TW200706069 A TW 200706069A
Authority
TW
Taiwan
Prior art keywords
electronic ballast
constant current
current control
current flowing
lamp
Prior art date
Application number
TW094124400A
Other languages
Chinese (zh)
Other versions
TWI282713B (en
Inventor
Ray-Lee Lin
Original Assignee
Univ Nat Cheng Kung
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 Univ Nat Cheng Kung filed Critical Univ Nat Cheng Kung
Priority to TW94124400A priority Critical patent/TWI282713B/en
Publication of TW200706069A publication Critical patent/TW200706069A/en
Application granted granted Critical
Publication of TWI282713B publication Critical patent/TWI282713B/en

Links

Abstract

The electronic ballast used to drive a discharge lamp and keep the current flowing through the discharge lamp is invented. The electronic ballast includes a rectifier, a starting circuit, a gate converter, an inverter, a resonant circuit and a constant current controlling circuit. The constant current control circuit is used to sense the current flowing through the lamp and then to control the gate converter for increasing or decreasing the switching frequency of the inverter for further regulating the current flowing the lamp.
TW94124400A 2005-07-19 2005-07-19 Electronic ballast with constant current control TWI282713B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW94124400A TWI282713B (en) 2005-07-19 2005-07-19 Electronic ballast with constant current control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW94124400A TWI282713B (en) 2005-07-19 2005-07-19 Electronic ballast with constant current control

Publications (2)

Publication Number Publication Date
TW200706069A true TW200706069A (en) 2007-02-01
TWI282713B TWI282713B (en) 2007-06-11

Family

ID=38823813

Family Applications (1)

Application Number Title Priority Date Filing Date
TW94124400A TWI282713B (en) 2005-07-19 2005-07-19 Electronic ballast with constant current control

Country Status (1)

Country Link
TW (1) TWI282713B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8669715B2 (en) 2011-04-22 2014-03-11 Crs Electronics LED driver having constant input current
US8669711B2 (en) 2011-04-22 2014-03-11 Crs Electronics Dynamic-headroom LED power supply
US8476847B2 (en) 2011-04-22 2013-07-02 Crs Electronics Thermal foldback system
CN109407744B (en) * 2018-12-03 2020-03-27 昂宝电子（上海）有限公司 Linear constant current control system and method for constant current control of a load

Also Published As

Publication number Publication date
TWI282713B (en) 2007-06-11

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees