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PHYS 222 Exam 1 Study Guide
PHYS 222 Exam 1 Study Guide

... - Equivalent capacitance - The charge distribution on a capacitor plate is not necessarily uniform. - Circuits: Emfs, resistors, resistance, parallel vs. series, Kirchoff’s Loop-rule, junctions, etc… - Understand how resistivity changes as the dimensions of the resistor change. - Voltage difference ...
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... - The rate of change in electrical energy - The rate at which work is done or energy is transformed - Measured in Watts (W) Power is the rate at which work is done, for example electrical power (how much heat an electrical hair dryer outputs per a given time interval) or mechanical power (how much a ...
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In this paper, a single-switch isolated driver for two
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... Bipolar Transistors), with a carrier frequency range of 1 kHz to 15 kHz, permits quiet motor operation. This drive has one control logic board and keypad for all horsepower ratings. Printed circuit boards employ surface mount technology, providing both high reliability, and small physical size of th ...
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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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