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BU52272NUZ - ROHM Semiconductor
BU52272NUZ - ROHM Semiconductor

... Figure 10. Supply Current vs Supply Voltage............................................................................................................................... 7 Description of Operations ..................................................................................................... ...
An Electronic Cause for Sudden Unintended Acceleration
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section 16610 - uninterruptible power system
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... than the signaling appliance) through the backbox. Such additional wires could result in insufficient wiring space for the signaling appliance. ...
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... GHz, this switch offers high isolation and low insertion loss. The switch operates using a positive control voltage of 0/+5 Volts, and requires a fixed bias of +5V. This switch is suitable for usage in 50-Ohm or 75-Ohm systems. ...
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... the current is negative and so the half-bridge node (that has a certain capacitance value due to the Coss of the MOSFETs and the stray capacitance of the circuit) is charged up to 400 V. After the deadtime has elapsed the high-side driver is turned on with zero volts across the high-side MOSFET drai ...
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Variable-frequency drive



A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.
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