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Microprocessor Control of a Microwave Oven
Microprocessor Control of a Microwave Oven

... Here are some of the devices are used in a microwave oven:  A microwave generator produces the microwaves that cook the food.  A lamp illuminates during the cooking process.  A motor drives a turntable so that the food rotates and ...
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Loadbreaking and the Bazooms Curve
Loadbreaking and the Bazooms Curve

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Diapositiva 1 - WikiService.at

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אלקטרוניקה
אלקטרוניקה

... 1. A resolution of 10 bit or more with an 'adjusted update rate' of greater than 3,500 MSPS; or 2. A resolution of 12 bit or more with an 'adjusted update rate' of greater than 1,250 MSPS and having any of the following: a. A settling time less than 9 ns to 0.024% of full scale from a full scale ste ...
MC33291 - NXP Semiconductors
MC33291 - NXP Semiconductors

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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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