TW429733B - Ballast circuit - Google Patents
Ballast circuitInfo
- Publication number
- TW429733B TW429733B TW87110843A TW87110843A TW429733B TW 429733 B TW429733 B TW 429733B TW 87110843 A TW87110843 A TW 87110843A TW 87110843 A TW87110843 A TW 87110843A TW 429733 B TW429733 B TW 429733B
- Authority
- TW
- Taiwan
- Prior art keywords
- tap
- voltage
- common
- circuit
- ballast circuit
- Prior art date
Links
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
A circuit is provided for energizing one or more discharge lamps. The circuit is capable of being powered from one or two alternative AC voltage and comprises a transformer having a common first tap, a second tap and a third tap, and a dual voltage means which accepts power from a pair of AC source lines. The dual voltage circuit connects the AC source lines to either the first common first tap and the second tap, if the voltage is at the first AC voltage, or to the common tap and the third tap if the voltage is at the second AC voltage.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/790,742 US5808421A (en) | 1994-03-28 | 1997-01-27 | Ballast circuit having dual voltage source and emergency battery |
Publications (1)
Publication Number | Publication Date |
---|---|
TW429733B true TW429733B (en) | 2001-04-11 |
Family
ID=25151633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW87110843A TW429733B (en) | 1997-01-27 | 1998-07-04 | Ballast circuit |
Country Status (1)
Country | Link |
---|---|
TW (1) | TW429733B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108512424A (en) * | 2018-05-25 | 2018-09-07 | 湖南恒信电气有限公司 | Regenerating braking energy energy storage energy consumption mixed type twin voltage standard absorption plant |
-
1998
- 1998-07-04 TW TW87110843A patent/TW429733B/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108512424A (en) * | 2018-05-25 | 2018-09-07 | 湖南恒信电气有限公司 | Regenerating braking energy energy storage energy consumption mixed type twin voltage standard absorption plant |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
GD4A | Issue of patent certificate for granted invention patent | ||
MM4A | Annulment or lapse of patent due to non-payment of fees |