Results 261 to 270 of about 5,855,392 (332)
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A new driving circuit for IGBT devices
IEEE Transactions on Power Electronics, 1995IGBT devices are increasingly used in power electronic equipment due to their high power handling capability. This paper deals with the problems that concern the turn-on, turn-off, and short-circuit of these devices. An optimal new driving circuit is proposed which gives excellent device output performances. Experimental oscillogram traces of transient
C. Licitra +5 more
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Vibration source driving device
The Journal of the Acoustical Society of America, 2008A vibration source driving device that realizes various vibration functions on portable telephones. The vibration source driving device includes a sound source for generating musical tone signals in response to music data. A vibration source to generate vibration, a driver to drive the vibration and a control circuit are further included such that the ...
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Self-reported handheld device use while driving
Accident Analysis & Prevention, 2019In spite of research and awareness of the hazards associated with handheld mobile device use while driving, many motorists continue to engage in this risky behavior. The mobile device use while driving has a detrimental effect on the operation of the vehicle. It contributes significantly to distraction which is a leading cause of accidents. Especially,
Karl Kim +3 more
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2003
The invention relates to a drive device, especially for gates, garage doors etc., comprising a guiding device extending in the displacement direction of the gate or door, especially a rail or a guiding rail. The invention is characterised in that the supply means comprise a first insertion body which can be introduced into the ends of the guiding rails.
SOMMER ANTRIEBS & FUNKTECHNIK +2 more
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The invention relates to a drive device, especially for gates, garage doors etc., comprising a guiding device extending in the displacement direction of the gate or door, especially a rail or a guiding rail. The invention is characterised in that the supply means comprise a first insertion body which can be introduced into the ends of the guiding rails.
SOMMER ANTRIEBS & FUNKTECHNIK +2 more
openaire +1 more source
2016
A driving device drives a working device with a parasitic capacitor, and includes a power unit, a first switching unit, an energy storage unit, a second switching unit and a control unit. The power unit outputs a power signal. The first switching unit receives the power signal.
Lin, Ray-Lee +3 more
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A driving device drives a working device with a parasitic capacitor, and includes a power unit, a first switching unit, an energy storage unit, a second switching unit and a control unit. The power unit outputs a power signal. The first switching unit receives the power signal.
Lin, Ray-Lee +3 more
openaire +1 more source
2004
A drive device (1) serves for adjusting an operating element (2) for a valve, a throttle, a blow-out preventor or the like, in particular in the field of gas and oil production, the operating element (2) being actively connected to at least one driving motor (4) via a drive train (3), and at least one transmission changing unit (5) being arranged in ...
COOPER CAMERON CORP, BIESTER KLAUS
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A drive device (1) serves for adjusting an operating element (2) for a valve, a throttle, a blow-out preventor or the like, in particular in the field of gas and oil production, the operating element (2) being actively connected to at least one driving motor (4) via a drive train (3), and at least one transmission changing unit (5) being arranged in ...
COOPER CAMERON CORP, BIESTER KLAUS
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1999
The invention relates to a driving device comprising two hydraulically controllable friction couplings (3) and friction brakes (4) by means of which a drive can be connected to a gear system and which function has a parking brake. An auxiliary release device comprising an adjustable accumulation piston (7) and control pistons (15, 16) cooperating with ...
ZAHNRADFABRIK FRIEDRICHSHAFEN +1 more
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The invention relates to a driving device comprising two hydraulically controllable friction couplings (3) and friction brakes (4) by means of which a drive can be connected to a gear system and which function has a parking brake. An auxiliary release device comprising an adjustable accumulation piston (7) and control pistons (15, 16) cooperating with ...
ZAHNRADFABRIK FRIEDRICHSHAFEN +1 more
openaire +1 more source
2002
The invention relates to a drive device comprising an electric drive motor, a housing, at least one shaft driven by the drive motor, compensation means enabling the end play of the shaft to be adjusted or compensated while the shaft is being mounted, and fixing means which are used to fix the shaft after the end play has been adjusted or compensated ...
VALEO AUTO ELECTRIC GMBH +2 more
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The invention relates to a drive device comprising an electric drive motor, a housing, at least one shaft driven by the drive motor, compensation means enabling the end play of the shaft to be adjusted or compensated while the shaft is being mounted, and fixing means which are used to fix the shaft after the end play has been adjusted or compensated ...
VALEO AUTO ELECTRIC GMBH +2 more
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Speaker and drive device therefor
The Journal of the Acoustical Society of America, 2002A sound signal from an audio amplifier is converted to a speed signal by a drive circuit, and a cone sheet which forms a diaphragm is driven by a supersonic wave motor driven by a travelling vibration wave through a link and a leaf spring.
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Thin Film Transistors as Driving Devices for Attached Devices
ECS Meeting Abstracts, 2014TFTs have been the most popular devices for the large area active matrix flat panel displays for the past 20 years. The a-Si:H TFT is suitable for driving the liquid crystal in the pixel level because of its characteristics of low power consumption, gray scale capability, low leakage current, etc. [1].
Yue Kuo, Geng-Wei Chang
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