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Measuring Voltage Drop and Current
Measuring Voltage Drop and Current

... The positive portion of the voltmeter (known as the positive terminal) is attached to the positive side of the circuit. The negative terminal of the voltmeter is attached to the negative side of the circuit. ...
PNP Bipolar Transistor for High-Current Switching Applications
PNP Bipolar Transistor for High-Current Switching Applications

... Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned ...
5 – The Power BJT 4
5 – The Power BJT 4

Selecting APU Power Wire
Selecting APU Power Wire

Three-Phase Power Conditioner Solatron™ Plus Series Instruction
Three-Phase Power Conditioner Solatron™ Plus Series Instruction

... using silicon rectifier switches and a multi-tap transformer arrangement. Tap transitions are made in a secondary control circuit and at less than full load current, eliminating voltage notching during each transition. ...
LM2576
LM2576

... Since the LM2576 converter is a switch-mode power supply, its efficiency is significantly higher in comparison with popular three-terminal limear reguators, especially with higher input voltages. In many cases, the power dissipated is so low that no heatsink is required or its size could be reduced ...
ppt_ch17
ppt_ch17

Ohm`s Law and DC Circuits
Ohm`s Law and DC Circuits

... and electrical resistance. If R is constant, V is proportional to I. However, the resistance of a device can’t always be assumed to be a constant. If you did the “Properties of Resistors” lab, you might recall that electrical resistance varies with temperature. Diodes are designed to conduct electri ...
Transformers
Transformers

... generated in power stations, so that it can be transported around the country at extremely high voltages.  using European appliances in the USA The USA mains runs at 110 V, while the UK uses 230 V. Goods made for the UK, but used in the USA, need a transformer to increase their supply voltage. 20 o ...
Circuit connections - series
Circuit connections - series

... encounters a loss of 1.5 volts of electric potential. This loss in electric potential is referred to as a voltage drop. It occurs as the electrical energy of the charge is transformed to other forms of energy (thermal, light, mechanical, etc.) within the resistors or loads. If an electric circuit po ...
Lab-13-AC-Circuit-Measurements
Lab-13-AC-Circuit-Measurements

VTVSxxASMF Series TVS Diodes Safeguard Portable Electronics
VTVSxxASMF Series TVS Diodes Safeguard Portable Electronics

... protection diodes that are the industry’s first to feature a 2 % breakdown voltage tolerance. Offered in the lowprofile SMF package, Vishay Semiconductors VTVSxxASMF series devices provide high surge capability of 400 W at 10/1000 μs for portable electronics.  Series consists of 23 devices with wor ...
Making a Shaker (or Forever) Flashlight
Making a Shaker (or Forever) Flashlight

Crompton Instruments Q2C Wiring Solution For quick and error-free installation
Crompton Instruments Q2C Wiring Solution For quick and error-free installation

DC circuit calculations
DC circuit calculations

... Actual voltage: ...
33.3 General Structure of Voltage Source Inverters
33.3 General Structure of Voltage Source Inverters

... transistors, one n-p-n type and the other p-n-p type. The switching speeds of np-n and p-n-p transistors are widely different unless they are produced carefully as matched pairs. In power electronic applications, n-p-n transistors are preferred as they can operate at higher switching frequencies. Si ...
Automatic Star Delta Starter Using Relays and Adjustable
Automatic Star Delta Starter Using Relays and Adjustable

3-phase short-circuit current (Isc) at any point within a LV installation
3-phase short-circuit current (Isc) at any point within a LV installation

... U20 = open-circuit secondary phase-to-phase voltage expressed in volts Pn = rating of the transformer (in kVA) Usc = the short-circuit impedance voltage of the transformer expressed in % The transformer windings resistance Rtr can be derived from the total losses as follows: ...
CASCADED MULTILEVEL INVERTER WITH SERIES
CASCADED MULTILEVEL INVERTER WITH SERIES

Square Body Flush End
Square Body Flush End

... The only controlled copy of this BIF document is the electronic read-only version located on the Bussmann Network Drive. All other copies of this BIF document are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical information tha ...
Designing a Boost Inverter to Interface between
Designing a Boost Inverter to Interface between

... Solar Cells supply electric energy renewable from primary resources. Solar cells are rarely used individually. Cells with similar characteristics are under peak sunlight (1 W/m 2) the maximum current delivered by a cell is approximately 30mA/cm2. Cells are therefore paralleled to obtain the desired ...
1.5 KVA Manual.03.indd - Smith-Root
1.5 KVA Manual.03.indd - Smith-Root

University of North Carolina-Charlotte Department of Electrical and Computer Engineering
University of North Carolina-Charlotte Department of Electrical and Computer Engineering

Aug 2014 - Pump Ed 101
Aug 2014 - Pump Ed 101

... Therefore the operating temperature is 130⁰C. The expected insulation life would be about 50,000 hours or about 2.5 times the life at 145⁰C. But, what happens if the phase voltage becomes unbalanced? At 3% unbalance the operating temperature increases by 19% (155⁰C) and insulation life is reduced by ...
photoelectric effect
photoelectric effect

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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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