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An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 7227341 | Circuit for use with switched leg power supply A circuit for use with a power supply coupled in a switched leg of, for example, a lighting circuit, is described. The circuit provides a low impedance near the zero crossing of the AC signal and a high impedance thereafter, thereby allowing the power supply to draw... | 06/05/2007 |
| 7218062 | Protective device and a CCFL driving system used thereon A protective device and a CCFL driving system using the same are provided. The protective device employs a short detecting circuit to receive a high AC power at the high terminal of the CCFL through a step-down capacitor. The protective device outputs a short-circui... | 05/15/2007 |
| 6577076 | Adaptive control for half-bridge universal lamp drivers An adaptive compensation circuit for controlling a universal lamp driver coupled to a lamp is disclosed. The adaptive compensation circuit utilizes an identification of a lamp type of the lamp to thereby generate a signal indicative of a time constant of ... | 06/10/2003 |
| 6034487 | Lighting circuit for discharge lamp A lighting circuit for a discharge lamp comprises a DC power supply circuit having a coil and a capacitor at its input stage, a DC-AC converter for converting the output voltage of the DC power supply circuit to an AC voltage and supplying the AC voltage ... | 03/07/2000 |
| 5642019 | Safety protector for non-isolated ballasts A protection circuit for non-isolated ballasts that drive gas discharge lamps to prevent shock hazards. The device acts to prevent excessive leakage currents from flowing between the ballast and ground by introducing a higher common mode impedance path in... | 06/24/1997 |
| 5638057 | Ground fault detection and measurement system for airfield lighting system The present invention includes an airfield lighting and control system for energizing at least one airfield control device and containing a ground fault detection system, comprising: (1) at least one airfield control device; (2) an AC electrical circuit c... | 06/10/1997 |
| 5254971 | Adaptive lamp monitor using capacitors and switches A lamp monitor provides a sense resistor for each lamp circuit as a special sense terminal member with a series resistance and sense terminals connected to a circuit board in a lamp monitor module. A multiplexing arrangement allows selection of the circui... | 10/19/1993 |
