Famous Patents
The first commercial microwave oven was nearly 6 feet tall and weighed in at 750 pounds.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7329840 | Heater lamp control apparatus and method to detect an inputted AC voltage and providing a pulse signal to correspond thereto A heater lamp control apparatus and method of detecting an input AC voltage and providing a pulse signal corresponding thereto, includes an AC voltage phase detection unit to detect a phase of the inputted AC voltage when a magnitude of the inputted AC voltage is ov... | 02/12/2008 |
| 6320773 | Transformer/rectifier for aircraft ground power unit A ground power unit for providing dc power for aircraft includes a source of 3-phase ac power and a transformer/rectifier arrangement for converting 3-phase ac power to dc power. The transformer/rectifier arrangement includes an A-phase transformer formed... | 11/20/2001 |
| 5400238 | Saturable core reactor responsive to short circuit conditions in a rectifier circuit A short circuit current limiting reactor is disclosed having a series pass inductor wound on a core. A saturation control circuit is employed to control the magnetic saturation of the core. Under normal operating conditions, the core is in magnetic satura... | 03/21/1995 |
| 4949235 | Magnetic amplifier shutdown circuit A power supply (100) for producing a regulated output DC voltage from an AC voltage source (12) having at least one phase (14); a fullwave rectifier (16) coupled to the AC voltage source for producing a rectified output voltage potential, the fullwave rec... | 08/14/1990 |
| 4441149 | Multi-voltage transformer input circuits with primary reactor voltage control A multi-voltage transformer input circuit, which may have multi-phase input, and where the input or each phase of the input has a primary reactor voltage control, is provided by the present invention. The primary winding of the transformer, or each phase ... | 04/03/1984 |
| 4276591 | Programmable power regulating power supply A high power D.C. supply regulated for constant output power to be dissipated in varying loads such as encountered in cathode sputtering systems. A.C. input power is rectified to produce the desired D.C. The output D.C. voltage and load current are measur... | 06/30/1981 |
| 3988566 | Automatic plasma flame spraying process and apparatus A plasma flame-spraying apparatus, having a source of primary gas and a source of a secondary plasma gas, is provided with means for insuring that when the secondary gas in passed through the electric arc established in the flame-spraying apparatus, which... | 10/26/1976 |
