This invention relates to the operation of a switching circuit, such as a bridge circuit. The invention provides a method of generating pulsed first and second switching signals for switching first and second switches of a switching circuit further comprising an output and that receives a DC signal of voltage +Vs, wherein switching of the first and second switches produces voltage pulses of +Vs, 0V and -Vs at the output; the method comprising the steps of: receiving a voltage demand signal; and ...

The invention relates to herbicidal compositions containing at least one compound from the group comprising imazaquin (A1), imazethapyr (A2) and imazethamethapyr (A3, AC 263222) in combination with at least one herbicide selected from the series comprising dicamba (B1), 2,4-D (B2), bromoxynil (B3), pyridate, the cyclohexanedione group and the pyridylsulfonylurea group.

In connection with the determination the transmit power of a beginning transmission there is also determined, in the method according to the invention, suitable output powers for other transmissions, so that the entity formed by all controlled transmissions is as close to the optimum as possible already at the beginning of a new frame. The method according to the invention takes into consideration the effect of a beginning transmission on other transmissions. The method according to the inventio...

A combine harvester comprising a threshing and separating mechanism for threshing and separating crop material and a cleaning device for cleaning threshed and separated grain. The cleaning device comprises a grain pan adapted to receive threshed and separated grain from the threshing and separating mechanism and to progressively convey said grain in the direction of the discharge end of the grain pan. A sieve structure is disposed to receive threshed and separated grain from the grain pan and co...

A drive circuit for electromagnetic vibrators. In a preferred embodiment, a transistor switch is used in combination with a passive waveshaping network to achieve approximately equal rise and fall times for coil current. The waveshaping network also protects the transistor switch from excessive voltages during switching.

Disclosed herein are a method and apparatus for logging the execution history of an operating system kernel by including an event description in a production image of the kernel. A command is received in order to enable an event description. The event description is enabled according to the command while the operating system kernel is executing. A description of an event is logged in an event log when the event occurs and when the event is enabled.

An electric motor having in each of the rotor and the stator a permanent magnet and an electromagnet of equal strength placed in parallel relation such that when the electromagnet coil is activated the flux of the magnets is additive and when the coil is deactivated the flux of the permanent magnet takes a closed circuit path through the electromagnet core, the rotor being mounted on a shaft for rotation relative to the stator and a commutator switch being included for alternately connecting and...

This invention relates to an apparatus for dosing and mixing at least two fluid reactants consisting of a dosing unit; a mixing head and conduits connecting the dosing unit and mixing head; characterized in that the housing of the dosing unit and the mixing head together form a rigid block with the conduits connecting the dosing cylinder with the mixing chamber in the form of channels inside the block.

A cathode ray tube socket assembly incorporating controlled, or tuned, spark gaps coupling the high voltage focus grid system to ground to prevent television receiver damage caused by CRT arc-over. Incorporated within the CRT socket assembly are a high voltage spark gap connected to the CRT's G.sub.4 focusing grid and a lower voltage spark gap connected to G.sub.3 focusing grids, each spark gap including ridged sections defining an inter-electrode aperture. By varying the size of the inter-elect...

A method and a device for determining the rotor temperature in a permanent-magnet-excited synchronous machine are described, in which field-oriented regulation takes place. An estimator is provided which is supplied with the manipulated variables for the direct-axis current and the cross current made available by a direct-axis current controller and a cross current controller. The estimator determines an estimate for the rotor temperature using the manipulated variables mentioned and a temperatu...