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Electric Circuits: Potential difference (Grade 10
Electric Circuits: Potential difference (Grade 10

... When a circuit is connected and complete, charge can move through the circuit. Charge will not move unless there is a reason, a force. Think of it as though charge is at rest and something has to push it along. This means that work needs to be done to make charge move. A force acts on the charges, d ...
PSpice Orcad Release 9.2 Tutorial Part II
PSpice Orcad Release 9.2 Tutorial Part II

... Now, for this system, we wish to simulate the operation of the circuit for an instance where the voltage source varies with time. First, the voltage source will have a value of zero for a period from the time origin (t = 0) to 100 seconds. Then, at 100 seconds we require that the voltage source shou ...
PDF
PDF

... 1.1. Single-phase, electrically operated vacuum switch with close and latch capability. The Edison Capacitor Switch is intended for application on up to 15.6 kV ungrounded WYE systems or 27 kV solidly grounded WYE systems for the 15 kV rated switch, and 25 kV ungrounded WYE systems or 38 kV solidly ...
MXL1001
MXL1001

... MXL1001 amplifiers can be used to upgrade older designs using these devices, with or without removal of external frequency compensation or nulling components. The MXL1001 can also be used in 741, LF156 or OP-15 applications provided the nulling circuitry is removed. The MXL1001 is specified over a w ...
a two stage isolated bidirectional dc/dc convertor for pv
a two stage isolated bidirectional dc/dc convertor for pv

... signals encountered in a power supply application. Ripple current ratings for capacitors can be somewhat arbitrary. Although the EIA has standards for calculating ripple current ratings, some manufactures use their own methods. This makes it difficult for end customers to have a one-toone comparison ...
lab2g0000.dox_
lab2g0000.dox_

... Thus the output voltage (VL) developed across load resistance RL is a series of positive half cycles of alternating voltage, with intervening very small constant negative voltage levels, It is obvious from the figure that the output is not a steady dc, but only a pulsating dc wave as depicted in the ...
ITN 600-S
ITN 600-S

... The overload occurs when the primary current IP exceeds a trip level such that the fluxgate detector becomes completely saturated and, consequently, the transducer will switch from normal operation to overload mode. This trip level is guaranteed to be greater than 110 % of IPN DC and its actual valu ...
Short Circuit Protection Short Circuit Protection
Short Circuit Protection Short Circuit Protection

... Any accidental short between the output pin and the GND pin of the FunctionPAK could cause permanent damage to the device. Whether that short is the result of component fatigue, accumulation of dust or debris over time, or accidental shorting by technicians during system check-out, the results would ...
EEE 110-5257
EEE 110-5257

Voltage Regulator
Voltage Regulator

... single device with associated components. These are generally three terminal devices that provide a positive or negative output. Some types have variable voltage outputs. A typical 7800 series voltage regulator is used for positive voltages. The 7900 series are negative voltage regulators. These vol ...
FAN7554 Versatile PWM Controller Features Description
FAN7554 Versatile PWM Controller Features Description

... secondary voltage generally becomes much greater than the rated voltage as the primary side continues to switch at the maximum current level. This may cause the blowing off the fuse or, in serious cases, fires. It is possible that the devices directly connected to the secondary output without a regu ...
PQube Specifications
PQube Specifications

... Accuracy ±0.2% rdg ±0.2% FS typical (10% ~ 100% FS), ANx-Earth. Every PQube factory tested at better than ±0.1% rdg ±0.1% FS AC Digital Input Connection DIG1 PQube screw terminal [24] Rating 60 VDC to Earth Wetting 5.4 VDC at 3 µA Threshold 1.5 V ±0.2 V with respect to PQube’s Earth terminal, w ...
fuse theory and operation
fuse theory and operation

... current flows in a fuse, heat is generated and its element temperature rises. If the current within(less or equal to) its continuous rated value, then the new steady state temperature is such that fuse does not melt. However, if the current has sufficient magnitude, the higher current will lead to t ...
Fundamentals of Linear Electronics Integrated & Discrete
Fundamentals of Linear Electronics Integrated & Discrete

ATMAE 2012 Session 3 Part 2 - Southwest Center for Microsystems
ATMAE 2012 Session 3 Part 2 - Southwest Center for Microsystems

... Two Variable Resistors Graphing Vab as a function of the variable resistances of R1 and R4 (in this case changing by the same amount while the other two, R2 and R3 remain constant at 100Ω) results in the following graph. ...
A Novel DFACTS Device for the Improvement of Power B.Y.Bagde
A Novel DFACTS Device for the Improvement of Power B.Y.Bagde

Resistor FAQ`s - RCD Components
Resistor FAQ`s - RCD Components

Unit Wise Questions
Unit Wise Questions

Fan Transfer Function Lab Report
Fan Transfer Function Lab Report

... is almost constant over the range of voltages. This fact agrees with DC motor theory. This lab is also an example of a phototransistor circuit. As the fan blade repeatedly cuts off the connection between LED and Photocell, a square wave is created. Each fan has a linear dependence on voltage, howeve ...
hw9soln
hw9soln

... a full threshold below that, or 0.1 or 0.2V depending on which value for Wb5 you used. On the high end, it’s Vtp+2Vovp below the top rail, or 2.5V. Output swing: independent of input common mode, it’s a threshold below G3 to a threshold above G4, so 0.4 or 0.6 to 2.2V. d. What is the minimum voltage ...
User Guide pdf (Page 11 - 12)
User Guide pdf (Page 11 - 12)

... into an overheat condition. In this condition, the flash-ready lamp will illuminate to indicate the presence of power, while the charging and modeling functions are disabled in order to allow the unit to cool. The unit will automatically resume operation once cooled sufficiently. In an overheat cond ...
Buck/Boost DC–DC Converter Topology with Soft Switching for PV
Buck/Boost DC–DC Converter Topology with Soft Switching for PV

... The buck–boost converter is called DC-to-DC converter. There are two different topologies in buck–boost converter. One is inverting topology and another one is non-inverting topology. Both of them can produce a range of output voltages. The output voltage is opposite polarity than the input. This is ...
MAX17019 Evaluation Kit Evaluates: General Description Features
MAX17019 Evaluation Kit Evaluates: General Description Features

Basic Electronics for the New Ham (Outline)
Basic Electronics for the New Ham (Outline)

... Measuring Current • There are two current ranges, high – up to 10 amps, and low – 200 milliamps (.2 amps) and below. • Internal fuses provide some meter protection for over current situations. – Because there is such a wide range of current scales, there are two physical probe jacks for the two ran ...
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31 - 1

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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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