A brush seal is provided wherein the brush seal is disposed in a section of a steam turbine for reducing leakage of a working fluid across a pressure drop. Specifically, two or more buck VRM modules are interleaved or connected in parallel. , glass fibers with a noncircular cross-sectional area and a dimension ratio of the main cross-sectional axis to the secondary cross-sectional axis of 2 to 6, in particular 3 to 6, most especially preferably from 3. The event conditioning logic unit may also be programmed to decrement the counter upon occurrences of an additional predetermined combination of the queue signals. The piston that acts on the compression chamber of the pressure booster is provided with control sections that can be used to relieve the pressure in the hydraulic chamber of the injection valve element. The control signal generator is adapted to control one or more switching circuits of the DC-to-DC converter such that the DC-to-DC converter transfers power from an input power source to a load.