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Concepts
Concepts

Typical Applications - All
Typical Applications - All

... The DE-SW0XX family operates over a wide input voltage range, from (Vout+1.3V) to 30v, at up to one amp of continuous output current. Efficiencies are up to 87% (Figure 2) Ripple is less than 2% of output. The DE-SW0XX family works on a breadboard, making it an ideal solution for prototyping and one ...
Ques Electricity - South Newcastle Trust
Ques Electricity - South Newcastle Trust

... Resistance – What you need to know for Higher tier An electric current flows when electrons move through a conductor, such as a metal wire. The moving electrons can collide with the ions in the metal. This makes it more difficult for the current to flow, and causes resistance. As the temperature inc ...
DC Circuits, Practical Problems
DC Circuits, Practical Problems

Sensor Interface
Sensor Interface

... Lamp Driving: The lamp can be driven by a square wave derived from a stable oscillator or a microprocessor I/O line. The magnitude of the sensor output signals are frequency dependent, and it is recommended that the lamp be pulsed at typically 4Hz with a 50% duty cycle. Lower pulsing frequencies wil ...
Datasheet - UNIPOWER
Datasheet - UNIPOWER

... source modules. J-4 is a 25 Pin D connector while each of the J-5 connectors is a 9Pin D type. Certain commands or signal are operative in both modes. For example, the local HV OFF/RESET pushbutton switch is operative in both local and remote modes. UVC’s are management options are designed with the ...
SOT-723 Plastic-Encapsulate Diodes 5V0AT7 CESDLC
SOT-723 Plastic-Encapsulate Diodes 5V0AT7 CESDLC

... ELECTRICAL CHARACTERISTICS (Ta= 25°C unless otherwise noted, VF = 0.9 V Max. @ IF = 10mA for all types) ...
Ohm`s Law - Blue Valley Schools
Ohm`s Law - Blue Valley Schools

... shown in Figure 1. Note: Attach the red connectors electrically closer to the positive side of the power supply. Current must pass through a Current Probe. A Voltage Probe is added last, and can be removed and not affect the circuit. Click . This sets the zero for both probes . A dialog box will app ...
ECE1250F14_Cookbk2KVLKCLEqns
ECE1250F14_Cookbk2KVLKCLEqns

... 1) Label all source and component values: A symbolic name of a source or resistor may be treated as a known numerical quantity in calculations. Avoid adding voltage labels to current sources or current labels to voltage sources. These labels are unnecessary. 2) Label all resistors with a voltage dro ...
1) Label all source and component values: A symbolic name of a
1) Label all source and component values: A symbolic name of a

... 1) Label  all  source  and  component  values:    A  symbolic  name  of  a  source  or  resistor  may  be  treated  as   a  known  numerical  quantity  in  calculations.    Avoid  adding  voltage  labels  to  current  sources  or   ...
Circuits - Instructor Outline - University of Michigan SharePoint Portal
Circuits - Instructor Outline - University of Michigan SharePoint Portal

Advice regarding High Frequency electronic luminaires
Advice regarding High Frequency electronic luminaires

... luminaires, all luminaires on a circuit must be replaced totally before power is restored as the spikes produced by the old ballasts may damage the new electronic ballasts. After exchanging conventional control gear for high frequency the increased simultaneous inrush currents must be considered whe ...
GFC SERIES Low ProFileTM 400 Hz AND 28 VDC
GFC SERIES Low ProFileTM 400 Hz AND 28 VDC

... Since its beginning in 1960, Unitron has specialized in the design and development of reliable solid-state power systems. Through an innovative design, advanced self-diagnostic systems (BITE) and modular construction, Unitron products assure maximum power availability and minimal repair time. The Lo ...
Electricity2
Electricity2

COMBOLIGHT Remodel Recessed w/ Trim - 120V PAR20 - 4 Light
COMBOLIGHT Remodel Recessed w/ Trim - 120V PAR20 - 4 Light

... against overheating and misuse of insulation over and around fixture. Vent holes in housing provide cooler operation. C.... Junction Box Junction Box is UL listed for through branch wiring, 6 #12 90º C supply conductors or 60º C for end of run. The fixture is also UL listed as ‘access above ceiling ...
Series Voltage Regulators
Series Voltage Regulators

Chapter 2 - Portal UniMAP
Chapter 2 - Portal UniMAP

... Branch: represents a single element (e.g. voltage source, resistor); i.e. represents any two-terminal element Node: point of connection between two or more branches; usually indicated by a dot in a circuit Loop: any closed path in a circuit; formed by starting at a node, passing through a set of nod ...
Electrical Safety -- and its implications for designing products
Electrical Safety -- and its implications for designing products

File - Electric Circuit Analysis
File - Electric Circuit Analysis

Finding the Temperature of a Light Bulb Filament
Finding the Temperature of a Light Bulb Filament

... current through the resistor and the voltage difference applied across the ends, i.e. ...
Ohm`s Law (and Circuit Theory) Tutorial
Ohm`s Law (and Circuit Theory) Tutorial

... resistance, the flatter the graph would be which means it takes a larger current to produce a change in voltage. Physically this means that for smaller resistances, there is not a large drop in voltage across them for a given current. Ohm’s Law by itself is very simple to use, but often we need to a ...
Rapid Electronics Ltd DATA SHEET MK484 RADIO IC
Rapid Electronics Ltd DATA SHEET MK484 RADIO IC

Catalogue Sheet
Catalogue Sheet

Условие - Reshaem
Условие - Reshaem

Chapters 5-6
Chapters 5-6

< 1 ... 867 868 869 870 871 872 873 874 875 ... 947 >

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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