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PowaTRIM Theory of Operation.
PowaTRIM Theory of Operation.

DTDG14GP
DTDG14GP

... The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devic ...
notes1
notes1

... kV, and 69 kV. Why is this? 2.0 The 2-winding autotransformer Because load tap changers and step-voltage regulators are autotransformers, we will spend some time studying autotransformers. Autotransformers are also used in connecting two different high voltage levels, e.g., 230 to 345 kV, or 230 to ...
Series Circuits
Series Circuits

DC power monitor - Texas State University
DC power monitor - Texas State University

Bias Power Supply for TFT LCD Panels - Global Mixed
Bias Power Supply for TFT LCD Panels - Global Mixed

Programmable Electronic Voltage Burden
Programmable Electronic Voltage Burden

Figure 12–4 - WordPress.com
Figure 12–4 - WordPress.com

... Objectives (cont’d.) – Describe how magnetism is used to produce electricity – State the differences between alternating current and direct current – List the units of measurement for electricity – Explain the differences between series and parallel circuits ...
Lab : Exploring Voltage, Current, and Resistance
Lab : Exploring Voltage, Current, and Resistance

... schematic at right.  If you do not know how to use the DMM, view the assigned video tutorials or ask a partner.  It  is more efficient to take all the voltage measurements first, then change the mode of the DMM to take all the  current measurements and then resistance measurements.  Each student, in ...
DTDG23YP
DTDG23YP

... The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devic ...
DN-103 Controlling a -5V Rail Using UCC2913 +3V to +8V Hot-Swap Power Manager
DN-103 Controlling a -5V Rail Using UCC2913 +3V to +8V Hot-Swap Power Manager

... –5V rail using high side (source side) current sensing. Because the voltage on the sense resistor is outside the acceptable common mode input range of the internal Linear Current Amplifier, level shift circuitry must be used. The current is sensed differentially using a low offset, rail-to rail inpu ...
TM_403
TM_403

... By P = I2R, power of 5- resistor = 0.52  5 = 1.25 W power of 1- resistor = 0.52  1 = 0.25 W ...
University of North Carolina-Charlotte Department of Electrical and Computer Engineering
University of North Carolina-Charlotte Department of Electrical and Computer Engineering

General Discussion on Energy Saving
General Discussion on Energy Saving

... flux and its efficiency can be as high as 0.9 in contrast with voltage control, the efficiency of which is only 0.6. Motor is running at low rotational speed by reducing voltage in the past, and now is done by changing voltage and frequency. The efficiency of motor, as commonly known, is inversely p ...
glossary of power terms
glossary of power terms

SERIES DM, DS (8
SERIES DM, DS (8

... sealed, maintenance-free battery. TYPE DM, DS to be supplied with Lead Calcium Battery. The unit shall supply the rated load for a minimum of 90 minutes or to 871/2% of rated battery voltage. The unit shall be rated 120/277Vac, 60 Hz and be UL924 Listed. The unit charger shall utilize an integrated ...
Test Procedure for the NCL30000LED1GEVB Evaluation Board
Test Procedure for the NCL30000LED1GEVB Evaluation Board

... mA. Record the measured load current for future reference. Input power should be less than 16.8 watts. Figure 1 shows a typical voltage/current regulation curve for this driver operating at 115 Vac input. The output ripple on the oscilloscope should be less than 1.5 V peak-to-peak including spikes. ...
EE2003 Circuit Theory
EE2003 Circuit Theory

... • A loop is any closed path in a circuit. • A network with b branches, n nodes, and l independent loops will satisfy the fundamental ...
Complex Impedance
Complex Impedance

... A filter must have at least one component with has an impedance that varies with frequency. The impedance is given by the time dependent ratio of voltage across the component to current through the component. This means that a filter must contain at least one inductance or capacitance. An inductor con ...
PHYS 222 Worksheet 13 – RC Circuits τ
PHYS 222 Worksheet 13 – RC Circuits τ

... (d) A long time after the circuit is completed (after many time constants) what is the voltage drop across the capacitor? After a long time, capacitor acts like a very large resistor (or break). So voltage across the capacitor becomes Vc = 130 V (e) A long time after the circuit is completed (after ...
Fault Finding
Fault Finding

... a - well soldered joints but “filament” of solder from one track to the next b - thin piece of copper joining the end of one track to the end of the next track c - badly soldered joint; the solder is not making good contact with the copper track d - well soldered joint but wire too long; it might re ...
File - Professional Portfolio
File - Professional Portfolio

... 1. Describe one difference between static electricity and current electricity. (2 marks) _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ ___________________ ...
Physics B Practice Final Exam
Physics B Practice Final Exam

Energy and Power
Energy and Power

A Triangular Wave Oscillator
A Triangular Wave Oscillator

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Electrical ballast



An electrical ballast is a device intended to limit the amount of current in an electric circuit. A familiar and widely used example is the inductive ballast used in fluorescent lamps, to limit the current through the tube, which would otherwise rise to destructive levels due to the tube's negative resistance characteristic.Ballasts vary in design complexity. They can be as simple as a series resistor or inductor, capacitors, or a combination thereof or as complex as electronic ballasts used with fluorescent lamps and high-intensity discharge lamps.
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