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Class Information
Number: 315/219
Name: Electric lamp and discharge devices: systems > Periodic switch in the supply circuit > Periodic switch in the primary circuit of the supply transformer
Description: Systems provided with a transformer connected between the source of supply and the load device for supplying electric current or potential to the load device and having the periodic switch connected in the primary circuit of the transformer so as to periodically interrupt the primary circuit.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4318170 |
Power inverter oscillator circuit |
Mar. 2, 1982 |
| 4307334 |
Transformer for use in a static inverter |
Dec. 22, 1981 |
| 4288724 |
Impulse generator for use with phosphor energizable lamps |
Sep. 8, 1981 |
| 4259614 |
Electronic ballast-inverter for multiple fluorescent lamps |
Mar. 31, 1981 |
| 4256992 |
Electric device for starting and feeding a metal vapor discharge lamp provided with a preheatable electrode |
Mar. 17, 1981 |
| 4254362 |
Power factor compensating electroluminescent lamp DC/AC inverter |
Mar. 3, 1981 |
| 4251753 |
Power supply circuit for strobo unit |
Feb. 17, 1981 |
| 4251752 |
Solid state electronic ballast system for fluorescent lamps |
Feb. 17, 1981 |
| 4248005 |
Electronic insect killer |
Feb. 3, 1981 |
| 4246515 |
Energy-regulating firing circuit for an electronic strobe flash unit |
Jan. 20, 1981 |
| 4228382 |
Power regulating inverter circuit |
Oct. 14, 1980 |
| 4201949 |
Portable gas laser and power supply |
May. 6, 1980 |
| 4187450 |
High frequency ballast transformer |
Feb. 5, 1980 |
| 4183080 |
DC to DC converter |
Jan. 8, 1980 |
| 4151445 |
Instant light lamp control circuit |
Apr. 24, 1979 |
| 4149113 |
D. C. Powered control circuit for energizing a cold cathode lamp |
Apr. 10, 1979 |
| 4145636 |
Fluorescent lamp driving circuit |
Mar. 20, 1979 |
| 4129805 |
Impulse generator for use with phosphor energizable lamps |
Dec. 12, 1978 |
| 4128788 |
Method and apparatus for operating a gaseous discharge lamp with improved efficiency |
Dec. 5, 1978 |
| 4087722 |
Apparatus and method for supplying power to gas discharge lamp systems |
May. 2, 1978 |
| 4079291 |
Electronic lighting device |
Mar. 14, 1978 |
| 4071807 |
Fluorescent lamp lighting device |
Jan. 31, 1978 |
| 4064415 |
Inductive spark ignition for combustion engine |
Dec. 20, 1977 |
| 4051413 |
Transistorized static inverters |
Sep. 27, 1977 |
| 4051411 |
Discharge lamp operating circuit |
Sep. 27, 1977 |
| 4051412 |
Discharge lamp operating circuit |
Sep. 27, 1977 |
| 4042852 |
Fluorescent lamps with high frequency power supply with inductive coupling and SCR starter |
Aug. 16, 1977 |
| 4042855 |
High frequency transistor ballast |
Aug. 16, 1977 |
| 4029993 |
Two level inverter circuit |
Jun. 14, 1977 |
| 4009416 |
Method for operating a gaseous discharge lamp with improved efficiency |
Feb. 22, 1977 |
| 4005335 |
High frequency power source for fluorescent lamps and the like |
Jan. 25, 1977 |
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