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Topic: Voltage


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In the News (Thu 21 Mar 19)

  
  Virtual Laboratory: Voltage
This measure of energy per unit charge is measured is called voltage (V) and the unit of measurement is called volts.
You are given a circuit on which you may vary the voltage by choosing from a variety of batteries and the resistance by adding resistors
To add batteries to the circuit, use the mouse to drag a battery from the toolbox (the box containing the various resistors and batteries) and drop it onto the larger battery on the circuit.
jersey.uoregon.edu /vlab/Voltage   (675 words)

  
  Voltage - Wikipedia, the free encyclopedia
Voltage is named in honor of the Italian physicist Alessandro Volta (1745–1827), who invented the voltaic pile, the first chemical battery.
Voltage is additive in the following sense: the voltage between A and C is the sum of the voltage between A and B and the voltage between B and C.
Voltage is a property of an electric field, not individual electrons.
en.wikipedia.org /wiki/Voltage   (674 words)

  
 Electric voltage
The difference in voltage measured when moving from point A to point B is equal to the work which would have to be done, per unit charge, against the electric field to move the charge from A to B. Used to calculate current in Ohm's law.
When a voltage is generated by a battery, or by the magnetic force according to Faraday's Law, this generated voltage has been traditionally called an "electromotive force" or emf.
It is useful to distinguish voltages which are generated from the voltage changes which occur in a circuit as a result of energy dissipation, e.g., in a resistor.
hyperphysics.phy-astr.gsu.edu /hbase/electric/elevol.html   (284 words)

  
 Voltage regulator - Wikipedia, the free encyclopedia
A voltage stabiliser is a type of household mains regulator which uses a continuously variable autotransformer to maintain an AC output that is as close to the standard or normal mains voltage as possible, under conditions of fluctuation.
An increase in the mains voltage causes the output to increase, which in turn causes the tap (or wiper) to move in the direction that reduces the output towards the nominal voltage.
That is followed by a linear regulator that generates exactly the desired voltage and eliminates nearly all the noise generated by the switching regulator.
en.wikipedia.org /wiki/Voltage_regulator   (1280 words)

  
 Define voltage - a Whatis.com definition - see also: electromotive force
Voltage, also called electromotive force, is a quantitative expression of the potential difference in charge between two points in an electrical field.
The greater the voltage, the greater the flow of electrical current (that is, the quantity of charge carriers that pass a fixed point per unit of time) through a conducting or semiconducting medium for a given resistance to the flow.
Voltage is symbolized by an uppercase italic letter V or E.
whatis.techtarget.com /definition/0,,sid9_gci213320,00.html   (313 words)

  
 Howstuffworks "What are amps, watts, volts and ohms?"   (Site not responding. Last check: )
The three most basic units in electricity are voltage (V), current (I) and resistance (r).
Voltage is measured in volts, current is measured in amps and resistance is measured in ohms.
The voltage is equivalent to the water pressure, the current is equivalent to the flow rate, and the resistance is like the pipe size.
science.howstuffworks.com /question501.htm   (797 words)

  
 Glossary of Motor Terms -"V"- B-9652-4   (Site not responding. Last check: )
The voltage of a motor is usually determined by the supply to which it is being attached.
NEMA requires that the motor be able to carry their rated horsepower at nameplate voltage plus or minus 10% although not necessarily at the rated temperature rise.
Voltage drop across a resistor takes the form of heat released into the air at the point of resistance.
www.reliance.com /prodserv/motgen/b9652_v.htm   (209 words)

  
 Voltage multipliers
Voltage multipliers may also be used as primary power supplies where a 177 volt-ac input is rectified to pulsating dc.
Although the measured output voltage of a voltage multiplier may be several times greater than the input voltage, once a load is connected the value of the output voltage decreases.
For this reason, voltage multipliers are used only in special applications where the load is constant and has a high impedance or where input voltage stability is not critical.
www.tpub.com /neets/book7/27m.htm   (1199 words)

  
 Voltage Regulator Power Conditioner Specification Guide   (Site not responding. Last check: )
The db is a logarithmic ratio of intensity or, in the case of electrical noise, the amplitude of one noise voltage level to another.
This is the time that it takes for the unit to adjust the output voltage to within the output regulation range, once the unit has begun to respond.
On the other hand, mechanical voltage regulators have a response time similar to that of the electronic units, but their slow correction time (measured in seconds) is really the limiting factor.
www.ustpower.com /Specification_guide.htm   (2222 words)

  
 RVM 5462 – Advanced Automatic Recovery Voltage Meter
Many high voltage working people have made this painful experience: to short-circuit a high voltage capacitor (which was previously charged with a direct voltage), to measure a voltage approx.
This voltage is due to the polarization of the insulation.
By applying a DC voltage, these molecules (which were electrically neutral) acquire a polarity and try to drift in the direction of the electrical field.
www.high-voltage-hubbell.com /products/5462/5462body1.htm   (266 words)

  
 AC/DC Voltage Sensor
Voltages up to ± 24V can be connected to the Voltage Sensor to determine the powered state of equipment, power strips (via a wall adapter), or the "ring" condition on a telephone circuit.
The Voltage Sensor is optically isolated and clamped by a transient voltage suppressor to ensure circuit isolation and protection from voltage surges.
The Voltage Sensor can be plugged directly into Global Caché's GC-100 Network Adapter, connecting the sensor to the network, or the Voltage Sensor will work with other controllers that provide 5V power and accept digital logic (TTL) input.
www.smarthome.com /8118.html   (214 words)

  
 PSC- Utility Info - Electric - Stray Voltage:Documents   (Site not responding. Last check: )
A stray voltage testing protocol is presented that has been tried and proven for the documentation of comprehensive, multi-source stray voltage testing.
The Phase II protocol should be considered a minimum test protocol for a follow-up stray voltage investigation where the amount and all sources of stray voltage are to be determined.
This document presents a synopsis of the data from the PSC utility stray voltage database that is up-to-date.
psc.wi.gov /utilityinfo/electric/strayvoltage.htm   (629 words)

  
 What is voltage regulator? - A Word Definition From the Webopedia Computer Dictionary
The voltage regulator's job is to reduce the 5 volt signal to the lower voltage required by the microprocessor.
Pentium microprocessors with MMX actually require two voltage regulators -- one for the internal (core) voltage, and one for the I/O drivers at 3.3 volts.
Some voltage regulators, particularly those packaged as a voltage regulator module (VRM), are voltage ID (VID) programmable, which means that the microprocessor can program the voltage regulator to provide the correct voltage during power-up.
www.webopedia.com /TERM/V/voltage_regulator.html   (238 words)

  
 Measuring high voltage or the "static electricity" on your body.
High voltage has all the characteristics of "static electricity." And when gradeschool textbooks are trying to teach us about "static," they are really trying to teach us about what high voltage can do.
Adjust the HV supply voltage until the deflection is about the same as when your body was charged by the rug-scuffing.
Capacitor voltage is always V = Q/C, and capacitance varies inversely with plate-spacing, therefor voltage varies directly with plate spacing.
www.amasci.com /emotor/voltmeas.html   (2109 words)

  
 Voltage - Free Music Downloads - MP3 Downloads - Download.com Music
At once caught between the chaotic pull of the noise community and the human urge to rock the party, VOLTAGE has trouble being identified as a rock band, but nonetheless craves the structure and ability to create concrete and beautiful works that are not lost in showmanship and flash.
Believing that the-emperor-must-always-have-his-clothes-on, VOLTAGE concerns themselves deeply with pushing and retooling the structure of their songs and their very instruments themselves on a regular basis.
Problematically referred to as a noise band for rockers or a Hella for the ladies, VOLTAGE has it in to prove that innovation, on a good day, can be accessible or even exciting.
music.download.com /voltage/3600-8626_32-100793301.html   (535 words)

  
 Colloidal Silver Generator Terminology and Definitions
Current flow is kept at a constant value by increasing or decreasing voltage as required to maintain the desired (or preset value) current flow.
In the process of making colloidal silver, the voltage is reduced as the current tries to rise.
Voltage is kept at a constant level (typically 27 volts) and current is then proportionate to the resistance in the circuit (silver/water solution).
www.silvergen.com /definiti.htm   (517 words)

  
 Transient Voltage Surge Suppression TVSS V-Blox
But if a voltage surge enters your electrical system, regardless of where it came from, the V-Blox® will recognize the surge faster than the ability of the surge to raise the system voltage and give the surge a path to ground.
When a voltage surge reaches a piece of equipment that piece of equipment has an erratic operation for the duration of that surge.
The clamping voltage is the point at which the components inside the surge protection device recognize the existence of the surge, then react to the surge, and then suppress the surge.
www.vblox.net /faqs.htm   (1461 words)

  
 110 volt to 220 power converter 220 volt to 110 voltage transformer 220 110v 120 240 volt voltage converter power ...
Voltage in the world differs for each country 220 volt or 110 volts.
In addition to voltage converters, the necessary plug adapters are needed since electrical wall outlets around the world differ in shape and size.
Dual voltage appliances such as hair dryers, curlers, shavers, travel irons are designed to work on 220 volt 50Hz or 120 volt 60Hz for worldwide use.
www.dvdoverseas.com /voltage_converters.htm   (544 words)

  
 PS3 voltage regulator
Most voltage regulators we are familiar with these days incorporate the use of feedback which monitors the current demand and then feeds this information back to the regulator that in turn increases or decreases the current.
The desired output voltage of the regulator is achieved by properly selecting the total voltage of the zener diode stack Z1, Z2, Z3 and Z4.
The regulated output voltage is obtained by selecting four zener diodes with voltage ratings that sum to the desired output voltage.
www.welbornelabs.com /ps3.htm   (800 words)

  
 Voltage Dividers
An input voltage is applied to the series combination and an output voltage is measured across one of the two resistors.
The output voltage will be some fraction of the input voltage, and the fraction is controlled by the values of the two resistors.
The output voltage is clearly dependent upon the temperature of the thermistor.
www.facstaff.bucknell.edu /mastascu/eLessonsHTML/Resist/Resist3.html   (3136 words)

  
 Opamp Offset Voltage
The offset voltage is modeled in series with one of the opamp input terminals.
The analysis for offset voltage is independent of the amplifier configuration.
Voltage VPOT generates a ramp that goes from -0.2V to +0.2 V. This simulates you turning the potentiometer over the full range.
www.ecircuitcenter.com /Circuits/op_voff/op_voff.htm   (837 words)

  
 ATXnotes   (Site not responding. Last check: )
There are several sources of voltage available in the motheboard power supply switch.
If you use the other voltage lines, make sure you check the specs of the power supply and make sure it will provide the current you need.
There are times when you may want to test an ATX power supply or use the voltage from one but don't really want to hook up a motherboard.
www.7volts.com /atxnotes.htm   (272 words)

  
 Identity-based Encryption - IBE & Enterprise Privacy Management
Voltage's Enterprise Privacy Management Platform provides a common framework for applying security and enforcing policies for data flowing inside and outside the enterprise, including email, files, documents, and instant messaging.
Voltage solutions can be deployed within an enterprise or provided by Voltage's managed security service partners.
Voltage enterprise solutions are broadly applicable to any organization with information security and compliance requirements, such as those found in financial services, healthcare and government.
www.voltage.com /about   (654 words)

  
 Electricity Around the World
The voltages listed here are the “nominal” figures reported to be in use at most residential or commercial sites in the country or area named.
Most electrical power systems are prone to slight variations in voltage due to demand or other factors.
Even if voltages are similar, a 60-hertz clock or tape recorder may not function properly on 50 hertz current.
kropla.com /electric2.htm   (1424 words)

  
 Voltage Security
At the "near end" there is voltage support, but at the far end of the line there is a complex power load.
Low voltage is not just an inconvenience for the users of electricity; it can result in a catastrophic failure of the whole system.
Remember that if the load demands more power while the voltage of the source is fixed, then the current carried by the line(s) must increase.
ee.washington.edu /energy/apt/nsf/previous/voltages/VoltageSecurity.htm   (502 words)

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