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A Novel Control Strategy for UPQC under Distorted Source
A Novel Control Strategy for UPQC under Distorted Source

... current problems, an advanced solution, i.e., the unified power quality conditioner (UPQC) has been developed [2]-[3]. The UPQC is composed of a shunt and a series APF to ensure both the load voltage and the supply current sinusoidal, where the shunt APF is operated as a controlled current source to ...
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A Quick Guide to Temperature Sensors and Calibration
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... Selecting an appropriate sensor is important if we are to make good measurements, not only choosing a correct temperature range but also a suitable physical construction and “sensing length”. This can be illustrated by an example, the diagram shows a metal block, the block is a few degrees cooler at ...
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... 1. With your powers supply OFF, turn both voltage knobs all the way down, and turn the current knob all the way up. 2. Plug in the power supply and turn it on. Adjust the voltage so that it reads 3.0 volts. Do not touch this setting or the current setting again unless you are told to do so. 3. To re ...
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IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)

... The top trace shows the voltage at the instrument input (1 V/div), the second trace shows sync out (5 V/div), and the third trace shows the differential voltage ( 1V/div with two channel in “ADD” mode) across the 1 ohm current sampling resistor. ...
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... Digital input enables or disables the internal circuitry. When disabled, the module is in the OFF state, and draws virtually zero current. This pin is a high impedance CMOS input with no pull-up or pull-down resistors. Main DC power supply for all circuitry in the RF3183. Traces to this pin will hav ...
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... When metal is heated to incandescence in a vacuum the electrons near the surface are given enough energy to fly off into the surrounding space. The Electron Gun starts with the Heater (or Filament) which uses an electric current in order to heat it up to incandescence. However, instead of using the ...
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... directly to the drive units so that none of the amplifier's power is lost. The drive units are more controlled, give lower distortion and higher efficiency. A good active system gives a sound which cannot be achieved by any other means. You just have to listen to it. A crossover is a filter which sp ...
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Opto-isolator



In electronics, an opto-isolator, also called an optocoupler, photocoupler, or optical isolator, is a component that transfers electrical signals between two isolated circuits by using light. Opto-isolators prevent high voltages from affecting the system receiving the signal. Commercially available opto-isolators withstand input-to-output voltages up to 10 kV and voltage transients with speeds up to 10 kV/μs.A common type of opto-isolator consists of an LED and a phototransistor in the same opaque package. Other types of source-sensor combinations include LED-photodiode, LED-LASCR, and lamp-photoresistor pairs. Usually opto-isolators transfer digital (on-off) signals, but some techniques allow them to be used with analog signals.
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