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resistors, capacitors and inductors in ac circuits
resistors, capacitors and inductors in ac circuits

Word Pro - Common Board Configuration Parallel Circuits
Word Pro - Common Board Configuration Parallel Circuits

... Branch Current, Mainline Current, Reciprocal, Kirchoff’s, Application software, Archive, Bot, FDD FDDI Fiber Optic, Keyword, kHz, Map Drive, Elevation, EMI, Electronic Smog, ESN, Network, Spike, Spool, Spyware, Synchronous Data, Synchronous Speed ...
Chapter 4 - UniMAP Portal
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Experiment – Bridge Circuits
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... If we were to use the bridge circuit in a near balanced condition, then measuring 5mV changes on a 200mV range with the meter as the bridge in the circuit should be relatively easy. Construct the circuit below. Do not worry about an exact balance on the bridge - get it within 100mV (using the potent ...
Voltage Trackers-pb
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unit3-7
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... capacitor they repel any more electrons moving on to the plate. This repulsion force must be overcome for more electrons to collect on the plate so “work has to be done”. This “Work Done” is the energy stored in the capacitor ….. E = ½ Q V …. Area under Q vs V ...
Chapter 5
Chapter 5

... output to exceed the supply voltages • When an output should exceed the possible voltage range, the output remains at either the maximum or minimum supply voltage • This is called saturation • Outputs between these limiting voltages are referred to as the linear region ...
MJE172
MJE172

... Low voltage high speed switching NPN transistor Features ...
Chapter 26 DC Circuits
Chapter 26 DC Circuits

... Kirchoff’s Rules II – DC voltage loops must be zero • The algebraic sum of the DC potential differences in any loop, including those associated with emfs (generally batteries here) and those of resistive elements, must equal zero. By convention we treat the charges as though they were positive carr ...
MAX1595 Regulated 3.3V/5.0V Step-Up/Step-Down Charge Pump General Description
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... maximize thermal performance. Not intended as an electrical connection point (TQFN package only). ...
Dual impedance digital multimeters
Dual impedance digital multimeters

... Impedance basics Most digital multimeters sold today for testing industrial, electrical, and electronic systems have high impedance input circuits greater than 1 megohm. In simple terms this means that when the DMM is placed across a circuit for a measurement, it will have little impact on circu ...
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... d. For discussion in class on Friday: Estimate how long it took for the voltage across the blue cylindrical component to reach 63% of its final value? How long did it take to increase to 86% of its final value? 95%? e. For discussion in class on Friday: Estimate how long it took for the voltage acro ...
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1 - turboecelegends

1.1 Single-phase power supplies
1.1 Single-phase power supplies

... year after year. Most dc drives use the six-pulse rectifier shown in Fig. Large drives may employ a 12-pulse rectifier. This reduces thyristor current duties and reduces some of the larger ac current harmonics. The two largest harmonic currents for the six-pulse drive are the fifth and seventh. They ...
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Op-Amp Imperfections in The Linear Range of Operations Gain and

Electricity
Electricity

... Using Voltmeter (device that measures voltage) measure the voltage of several batteries. Connect the voltmeter across the single battery, batteries connected in series, or parallel connected batteries. You will use batteries with nominal voltage 1.5 V. The actual battery voltage may be lower than th ...
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LMP8271 High Common Mode, Gain of 20

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... A long, straight wire is in the same plane as a rectangular, conducting loop.The wire carries a constant current I as shown in the figure. Which one of the following statements is true if the wire is suddenly moved toward the loop? (a) There will be no induced emf and no induced current. (b) There ...
Power Monitoring in Home Area Network using Smartmote
Power Monitoring in Home Area Network using Smartmote

... smartmote is presented which can be easily used with home energy management system. The designed smart mote has the following features (1) It provides a smart solution to monitor electrical parameters such as voltage, current of residential load. (2) It is based on IEEE 802.15.4 standard (ZigBee pro ...
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Resistive opto-isolator



Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.
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