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... (32) 2 generators G1, G2 are working in parallel, what is the necessary condition of the G1 has to disconnect and the whole has to be carried out by G2_ _ _ (33) Lagging p.f load will be burden to the_ _ _ (consumer, power plant, both ... ) (34) Percentage of oxygen in the air is_ _ _ (21%) (36) One ...
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... also reduces the total harmonic distortion (THD) of its output waveform. This paper also represent circuit configuration, theoretical operation and MATLAB based simulation results. Keywords— Multilevel inverter, Switched series parallel, Hbridge, PWM ...
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Nanoscience - LampX Web Server

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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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