US4355264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starter circuit for discharge lamp
Assignee: Claude Paz et Visseaux SA
•
Filing: 1981-02-09
•
Granted: 1982-10-19
•
Expires: 2001-02-09
Abstract
Abstract A starter circuit for a high power discharge lamp connected to an AC source via a series inductor. The starter circuit comprises a capacitor connected in series with a triac across the lamp, and a branch including a first resistor connected in series with a zener diode and a second resistor between the junction of the capacitor and triac and one side of the AC source. A driving circuit for the triac includes a diac connected to the junction of the second resistor and zener diode.
Inventors
- 👤 Gian F. Merli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:47
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/02; H05B41/04; H05B41/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A starter circuit for a high power discharge lamp connected to an AC source via an inductor, the starter circuit comprising, in combination: a capacitor series connected with a triac across said lamp; a branch including a first resistor connected in series with a zener diode and a second resistor between the junction point of said capacitor and triac and one of the outputs of the AC source; and, a driving circuit for said triac including a diac connected between the triac and the junction point of said second resistor and zener diode.
Claim 2
Dependent Claim
93 words
A starter circuit for a high power discharge lamp connected to an AC source via an inductor, the starter circuit comprising, in combination: a capacitor series connected with a triac across said lamp; a branch including a first resistor connected in series with a zener diode and a second resistor between the junction point of said capacitor and triac and one of the outputs of the AC source; and, a driving circuit for said triac including a diac connected between the triac and the junction point of said second resistor and zener diode.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-18 | 1986-04-19 | 1986-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-18 | 1990-04-19 | 1990-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-18 | 1994-04-19 | 1994-10-19 | $7700.00 | Window Closed / Lapsed |