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Electric Current Study Guide
Electric Current Study Guide

... into other forms in the external circuit. d. If a unit of charge has a high electric potential at any given location, then that charge possesses a large amount of electric potential energy at that location. e. A 6-Volt battery would provide 12 Joules of energy to 2 Coulombs of charge as it is moved ...
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... The diagram shows two charged parallel plates in a vacuum. The electric field between the plates is shown by the dashed lines. An electron starts from rest at G and moves along one of the paths GH or GI. ...
Performance Characteristics
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... and/or an additional band indicating temperature coefficient, in units of ppm/K. For large power resistors and potentiometers, the value is usually written out implicitly as "10 kΩ", for instance. Capacitors: You will mostly use electrolytic and ceramic capacitors for your experiments. Electrolytic ...
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... want to make. If the meter is switched to 20 V DC, for example, then 20 V is the maximum voltage which can be measured, this is sometimes called 20 V fsd, where fsd is short for full scale deflection. For circuits with power supplies of up to 20 V, which includes all the circuits you are likely to b ...
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... the motor when the motor is switched off. At the instant that the motor is switched off, the motor and the driven load are at full speed. When the motor is switched off, the motor and load inertia will continue to drive the motor. If the magnetizing current required by the motor is available from th ...
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... detector. A diode peak detector is a noncoherent AM demodulator. It detects the peaks of the AM envelope and thus produces an output Voltage that is proportional to the shape of either the positive or negative half of the envelope. The output Voltage from a peak detector depends on both the amplitud ...
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Parallel Circuits - Northwest ISD Moodle

... Parallel Power Source Characteristics in a Parallel Circuit • Parallel Power supplies provide a higher current capacity. (amps add up) Yet the voltage stays the same throughout the circuit • In parallel connection, all positive cell electrodes are connected to one line, and all negative electrodes ...
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... The features of the Gyratec 21 are as follows: The inputs and outputs are floating transformer balanced, without galvanic isolation. Input impedances are rather low - down to a couple of hundred Ohms at extreme settings, so make sure that the unit driving it has enough juice to keep it happy. Most m ...
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... amplifier with single power supply designed for LCD TVs and monitors. Thanks to the high efficiency and exposed-pad-down (EPD) package no separate heatsink is required. Furthermore, the filterless operation allows a reduction in the external component count. The TDA7491LP is pin-to-pin compatible wi ...
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... 1. Turn meter off and disconnect test leads from the meter and circuit under test. 2. Remove the (1) Phillips head screw on the back of the meter. 3. Open battery compartment, replace (1) 1.5V ‘AA’ battery observing correct polarity. Re-assemble the meter before use. Safety: Never dispose of batteri ...
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Switched-mode power supply



A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.
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