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Class Information
Number: 315/308
Name: Electric lamp and discharge devices: systems > Current and/or voltage regulation > Automatic regulation > Regulator responsive to plural conditions
Description: Systems wherein the regulating means is responsive to two or more conditions; such as, the current and the voltage of the circuit, or a condition of the load device and the current or voltage of the circuit.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4475065 |
Method of operating HID sodium lamp to minimize lamp voltage variation throughout lamp life |
Oct. 2, 1984 |
| 4473779 |
Power factor measuring cut-off arrangement for and method of protecting a ballast-starter circuit from high pressure sodium lamp cycling malfunction |
Sep. 25, 1984 |
| 4464610 |
Modular lighting control with circulating inductor |
Aug. 7, 1984 |
| 4461977 |
Single zone lighting controller |
Jul. 24, 1984 |
| 4459515 |
Phase-controlled ballast having shifting control |
Jul. 10, 1984 |
| 4456855 |
Intensity regulator, especially a light regulator |
Jun. 26, 1984 |
| 4455510 |
High intensity discharge ballast with hot restrike performance |
Jun. 19, 1984 |
| 4450384 |
DC Light dimmer control system |
May. 22, 1984 |
| 4438370 |
Lamp circuit |
Mar. 20, 1984 |
| 4437043 |
Lighting control for high intensity discharge lamp |
Mar. 13, 1984 |
| 4422016 |
Constant energy transfer rate strobe source |
Dec. 20, 1983 |
| 4421993 |
Load resistance control circuitry |
Dec. 20, 1983 |
| 4415839 |
Electronic ballast for gaseous discharge lamps |
Nov. 15, 1983 |
| 4414493 |
Light dimmer for solid state ballast |
Nov. 8, 1983 |
| 4412156 |
Power supply for an ac discharge lamp |
Oct. 25, 1983 |
| 4409522 |
Direct current power source for an electric discharge lamp using reduced starting current |
Oct. 11, 1983 |
| 4399392 |
Arc lamp power supply |
Aug. 16, 1983 |
| 4396872 |
Ballast circuit and method for optimizing the operation of high intensity discharge lamps in the growing of plants |
Aug. 2, 1983 |
| 4358717 |
Direct current power source for an electric discharge lamp |
Nov. 9, 1982 |
| 4358716 |
Adjustable electrical power control for gas discharge lamps and the like |
Nov. 9, 1982 |
| 4356433 |
HID Lamp power supply |
Oct. 26, 1982 |
| 4350891 |
Low ripple regulated X-ray tube power supply |
Sep. 21, 1982 |
| 4347461 |
Incident illumination responsive light control |
Aug. 31, 1982 |
| 4339693 |
Arrangement including a gas and/or vapor discharge lamp |
Jul. 13, 1982 |
| 4320326 |
Electronic device for controlling the brightness of an electric gas discharge lamp without an incandescent cathode |
Mar. 16, 1982 |
| 4289993 |
Direct current power source for an electric discharge lamp |
Sep. 15, 1981 |
| 4277728 |
Power supply for a high intensity discharge or fluorescent lamp |
Jul. 7, 1981 |
| 4240009 |
Electronic ballast |
Dec. 16, 1980 |
| 4224563 |
Regulator circuit for photographic illumination |
Sep. 23, 1980 |
| 4162669 |
Ignition system for rotary piston engines |
Jul. 31, 1979 |
| 4162429 |
Ballast circuit for accurately regulating HID lamp wattage |
Jul. 24, 1979 |
| 4156166 |
Method and apparatus for saving energy |
May. 22, 1979 |
| 4155032 |
Constant illumination apparatus |
May. 15, 1979 |
| 4076996 |
Power supplier for magnetron |
Feb. 28, 1978 |
| 4045742 |
High voltage shutdown circuit responsive to excessive beam current and high voltage |
Aug. 30, 1977 |
| 4037148 |
Ballast control device |
Jul. 19, 1977 |
| 3999100 |
Lamp power supply using a switching regulator and commutator |
Dec. 21, 1976 |
| 3969652 |
Electronic ballast for gaseous discharge lamps |
Jul. 13, 1976 |
| 3967159 |
Power supply for a laser or gas discharge lamp |
Jun. 29, 1976 |
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