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Class Information
Number: 315/209R
Name: Electric lamp and discharge devices: systems > Periodic switch in the supply circuit
Description:
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5698950 |
Suppressor for an electronic ballast in a discharge lamp |
Dec. 16, 1997 |
| 5691603 |
Electronic ballast with multiple lamp loads |
Nov. 25, 1997 |
| 5691607 |
Modular high power modulator |
Nov. 25, 1997 |
| 5689155 |
Electronic stabilizer having a variable frequency soft start circuit |
Nov. 18, 1997 |
| 5686797 |
Electronluminescent lamp inverter |
Nov. 11, 1997 |
| 5682086 |
Dynamic filter for an electronic ballast with a parallel-load resonant inverter |
Oct. 28, 1997 |
| 5680017 |
Driving scheme for minimizing ignition flash |
Oct. 21, 1997 |
| 5677599 |
Circuit for driving an electroluminescent lamp |
Oct. 14, 1997 |
| 5677601 |
Operating circuit for low-power low-pressure discharge lamps, particularly compact fluorescent lamps |
Oct. 14, 1997 |
| 5670849 |
Circuit arrangement |
Sep. 23, 1997 |
| 5652479 |
Lamp out detection for miniature cold cathode fluorescent lamp system |
Jul. 29, 1997 |
| 5642018 |
Display panel sustain circuit enabling precise control of energy recovery |
Jun. 24, 1997 |
| 5640069 |
Modular lighting system |
Jun. 17, 1997 |
| 5625258 |
Clocked power supply |
Apr. 29, 1997 |
| 5623187 |
Controller for a gas discharge lamp with variable inverter frequency and with lamp power and bus voltage control |
Apr. 22, 1997 |
| 5621281 |
Discharge lamp lighting device |
Apr. 15, 1997 |
| 5619104 |
Multiplier that multiplies the output voltage from the control circuit with the voltage from the boost circuit |
Apr. 8, 1997 |
| 5612594 |
Electronic dimming ballast feedback control scheme |
Mar. 18, 1997 |
| 5612597 |
Oscillating driver circuit with power factor correction, electronic lamp ballast employing same and driver method |
Mar. 18, 1997 |
| 5610479 |
Circuit arrangement for operating low-pressure discharge lamps |
Mar. 11, 1997 |
| 5608291 |
Electronic ballast with pulsing output voltage |
Mar. 4, 1997 |
| 5608292 |
Single transistor ballast with filament preheating |
Mar. 4, 1997 |
| 5608293 |
Lamp circuit arrangement for controlling current flow through switching element |
Mar. 4, 1997 |
| 5608294 |
High pressure lamp operating circuit with suppression of lamp flicker |
Mar. 4, 1997 |
| 5608295 |
Cost effective high performance circuit for driving a gas discharge lamp load |
Mar. 4, 1997 |
| 5604409 |
Electronic lighting controller |
Feb. 18, 1997 |
| 5600209 |
Electronic candle simulator |
Feb. 4, 1997 |
| 5600211 |
Electronic ballast for gas discharge lamps |
Feb. 4, 1997 |
| 5592054 |
Fluorescent lamp ballast with selectable power levels |
Jan. 7, 1997 |
| 5589739 |
Hybrid ballast for high pressure discharge lamp |
Dec. 31, 1996 |
| 5584571 |
Apparatus for simulating lighting effects |
Dec. 17, 1996 |
| 5585698 |
Current supply means for a laser flash lamp |
Dec. 17, 1996 |
| 5581132 |
Peak demand limiter and sequencer |
Dec. 3, 1996 |
| 5581161 |
DC coupled electronic ballast with a larger DC and smaller AC signal |
Dec. 3, 1996 |
| 5578907 |
Power supply circuit |
Nov. 26, 1996 |
| 5568016 |
Power supply for an electroluminescent panel or the like |
Oct. 22, 1996 |
| 5565740 |
Electronic ballast for hot cathode discharge lamps |
Oct. 15, 1996 |
| 5561349 |
Frequency-modulated converter with a series-parallel resonance |
Oct. 1, 1996 |
| 5561350 |
Ignition System for a turbine engine |
Oct. 1, 1996 |
| 5559395 |
Electronic ballast with interface circuitry for phase angle dimming control |
Sep. 24, 1996 |
| 5559396 |
Ballast filtering scheme for reduced harmonic distortion |
Sep. 24, 1996 |
| 5559405 |
Parallel resonant ballast with boost |
Sep. 24, 1996 |
| 5557176 |
Modulated electronic ballast for driving gas discharge lamps |
Sep. 17, 1996 |
| 5550436 |
MOS gate driver integrated circuit for ballast circuits |
Aug. 27, 1996 |
| 5550437 |
Electronic dimmable gas tube power supply with overvoltage protection |
Aug. 27, 1996 |
| 5550438 |
Circuit arrangement |
Aug. 27, 1996 |
| 5546300 |
Zero voltage switching controller of resonance mode converter and electronic ballast using the same |
Aug. 13, 1996 |
| 5543690 |
High voltage ignition circuit for a discharge lamp |
Aug. 6, 1996 |
| 5539281 |
Externally dimmable electronic ballast |
Jul. 23, 1996 |
| 5530321 |
Power supply for a gas discharge lamp |
Jun. 25, 1996 |
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