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The accessory e.g. lamp for illumination of the hand-held instrument (L) and the excitation coils (B1-B3) of the brushless motor (M) are all supplied with current through a rotary connector (F) from a control circuit (C1) within a fixed part of the machine ...
The manifestations of semiconductor depletion and depolarizing effects in switching and fatigue are studied and compared. It is shown that these effects play important but quite different roles in switching. The depletion effect strongly influences the val ...
Air-magnetic circuit breakers are widely used for short-circuit protection in DC electric railways or industrial plants. The well-known drawbacks of these breakers are mainly a slow breaking action, a short lifetime and high maintenance costs due to the de ...
NOVELTY - A micro-electro-mechanical-system (MEMS) is manufactured by the use of a sacrificial layer that is made of silicon. USE - The invention is used in surface micromachining for the manufacture of a MEMS containing a suspended metal layer or MEMS dev ...
A novel MEMS technological platform for RF passive components, namely RF MEMS switches, tuneable capacitors and high-Q suspended inductors, is reported. The proposed process employs a metal (Al, AlSi or Cu) as active movable layer and amorphous silicon or ...
This paper deals with asymmetrical multi-level inverters. The investigated topologies consist of series connected cells with different input voltages. Some combinations of different input voltages have been proposed to improve the converter resolution. Thi ...