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Topic: Nominal power

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	epanorama.net/Amplifier power
		Power measurement of an amp requires that the amp is properly terminated by Ohmic resistances of nominal value both at input and output.
		The nominal power for speakers is defined quite differently: The continous power is measured by pink noise rather than a sinousoidal signal and it is applied for 24 hours.
		If a manufacturer chooses to quote a power rating at 4 ohms in their advertising, the amp must be capable of delivering this much power after a 'warmup' period of operation at 1/3 power (which level actually dissipates _more_ heat in the output stage than full-power operation).
	www.epanorama.net /documents/audio/amplifier_power.html (1968 words)

	Definition of Nominal power
		For non-directional stations, nominal power is normally equal to the RF power presented to the antenna, as determined from the base current and the antenna's nominal impedance at the carrier frequency.
		For directional stations, nominal power is normally equal to the RF power at the common point (the point at which the transmitter output branches off into separate phasing networks for each tower).
		Nominal power is ultimately a historical artifact of the regulatory regime employed by the FCC prior to the 1980s.
	www.wordiq.com /definition/Nominal_power (461 words)

	Nominal watt - Wikipedia, the free encyclopedia
		Nominal wattage is used to simplify the measurement of the efficiency of a loudspeaker.
		Such high power levels could cause damage to either the amplifier or the amplifier's power supply, or the circuit connected to the amplifier's output (including the loudspeaker).
		Loudspeaker efficiency is measured with respect to nominal power in order to emulate the situation outlined above where a low internal impedance amplifier is used with a loudspeaker.
	en.wikipedia.org /wiki/Nominal_watt (406 words)

	Preface (Power System Blockset)
		Once the base power and the base voltage are chosen, the base current and the base impedance are determined by the natural laws of electrical circuits.
		For a transformer with N windings, each having a different nominal voltage, the same base power is used for all windings (nominal power of the transformer).
		The inertia is calculated from inertia J, synchronous speed, and nominal power.
	www.phys.ufl.edu /docs/matlab/toolbox/powersys/preface3.html (882 words)

	Stata Data Analysis Examples: Multiple Regression Power Analysis
		Power analysis is the name given to the process for determining the sample size for a research study.
		In most cases, power analysis involves a number of simplifying assumptions, in order to make the problem tractable, and running the analyses numerous times with different variations to cover all of the contingencies.
		The nominal alpha level is 0.05 but has been adjusted to.034 to take into account the number of hypotheses tested and the correlation between the predictors.
	www.ats.ucla.edu /stat/stata/dae/powerreg.htm (849 words)

	What do you understand by a horse power (Site not responding. Last check: 2007-10-25)
		The nominal power of ordinary condensing engines may be ascertained by the following rule: multiply the square of the diameter of the cylinder in inches, by the velocity of the piston in feet per minute, and divide the product by 6,000; the quotient is the number of nominal horses power.
		The actual power, on the contrary, is a mechanical force or dynamical effort capable of raising a given weight through a given distance in a given time, and of which the amount is ascertainable by scientific investigation.
		of coal per nominal horse power per hour is a common consumption; but such engines exert nearly twice their nominal power, so that the consumption per actual horse power per hour may be taken at from 5 to 6 lbs.
	www.harvestfields.netfirms.com /etextLinks/010/06.htm (4069 words)

	PLC Basics and Voltage Sag SusceptibilitiesÃ¢ÂÂ”Part 2
		For relays and contactors, a mismatch of 10% of voltage equates to an increase in susceptibility by 10%.
		But in DC power supplies, the energy stored in the internal capacitors can be as much as 18% lower when the input voltage is mismatched by as little as 10%—directly equating to a reduction in ride-through time.
		Avoid power conditioners with square-wave outputs since the AC input module channels on the PLC may not be able to resolve the square-wave signal.
	powerquality.com /mag/power_plc_basics_voltage/index.html (1704 words)

	Products & Technology - Understanding Amplifier Power Rating
		The power bandwidth is defined as the bw for which 1/2 of the rated continuous power can be obtained.
		The reason for this power rating was to show the max capability of equipment for recreating strong musical transients like kettledrums and the like.
		The nominal power for speakers is defined quite differently: The continuous power is measured by pink noise rather than a sinusoidal signal and it is applied for 24 hours.
	www.1388.com /articles/tech_underAmp (851 words)

	Paxman History Pages - Nominal Horsepower (NHP)
		Since the nominal power is a mere conventional expression, it is clear that it must be determined by a merely conventional process.
		The nominal power of ordinary condensing engines may be ascertained by the following rule : Multiply the square of the diameter of the cylinder in inches by the velocity of the piston in feet per minute, and divide the product by 6,000 ; the quotient is the number of nominal horses power.
		Yes ; the nominal power is as much a commercial measure as a yard or a bushel, and is not a thing to be ascertained by any process of science, but to be fixed by authority in the same manner as other measures.
	www.nelmes.fsnet.co.uk /paxman/nhp-defn.htm (2331 words)

	Section
		(b) The authorized antenna input power for each station shall be equal to the nominal power for such station, with the following exceptions: (1) For stations with nominal powers of 5 kW, or less, the authorized antenna input power to directional antennas shall exceed the nominal power by 8 percent.
		In such cases, excess power may be dissipated in the antenna feed circuit, the transmitter may be operated with power output at a level which is less than the rated carrier power, or a combination of the two methods may be used, subject to the conditions given in paragraph (c) of this section.
		(ii) Where the authorized antenna input power is less than the nominal power, subject to the conditions set forth in paragraph (c) of this section, the transmitter may be operated at the reduced power level necessary to supply the authorized antenna input power.
	edocket.access.gpo.gov /cfr_2005/octqtr/47cfr73.51.htm (810 words)

	London Power POWER SCALING Q&A
		The power that is not needed is thrown away as heat, with the required power going to the speaker.
		Power Scaling is the best solution for those players who incorporate some amount of output stage "effect" in their sound.
		Meanwhile, as audio power is reduced, waste power in the power tubes goes down in direct proportion, which increases their reliability.
	www.londonpower.com /pscaling.htm (1481 words)

	Nominal Power Formula
		This nominal power formula is fine for our glasses lenses for a lens power that is less than about +4.00 D; above that the assumption that the lens thickness is negligible is no longer valid.
		The nominal lens formula says that you can add together the powers of the front and back surfaces of the lens, and you will have the nominal power of the lens.
		The first one, labeled plano power, has one plus surface and one minus surface, and the curvatures of the two surfaces are the same.
	www.nfos.org /degree/opt11/module_06b.html (796 words)

	MOVITROM Manutenção e Sistemas de Energia, Lda. \| S. Domingos de Rana (Site not responding. Last check: 2007-10-25)
		With a new tighter power tolerance of 3% a higher average power output is guaranteed.
		Being one of the most powerful modules manufactured by BP Solar, the BP 7170 is ideal for installations where high power is needed in a limited area.
		Being one of the most powerful modules manufactured by BP Solar, the BP 7175 is ideal for installations where high power is needed in a limited area.
	www.movitrom.com /files_produtos/solar/modulos/bp.htm (1458 words)

	Synchronous Machine (SimPowerSystems)
		The nominal field current makes it possible to compute the transformation ratio of the machine, which allows you to apply the field voltage viewed from the rotor, as in real life.
		Otherwise, enter a 0 as nominal field current, as explained earlier, and specify the initial field voltage in volts DC referred to the stator.
		For saturation, the nominal field current multiplied by the d-axis magnetizing inductance and nominal rms line-to-line voltage are the base values for the field current and terminal voltage, respectively.
	www.weizmann.ac.il /matlab/toolbox/powersys/synchronousmachine.html (1604 words)

	Nextek Power Systems - News - Articles - Battery Load Management
		This function allows power to be diverted from the battery, to the load, offsetting the AC input peak.
		Nextek power units may be applied to a simple load management scheme, whereby the interruption of the AC line to the power unit causes the power to the lighting to be supported by the storage.
		When this device is signaled to "turn-off," the power unit will be isolated from its AC power and automatically service the lighting load from the battery bank.
	www.nextekpower.com /news-articles-battery-load-mngt.html (1540 words)

	Power Integrations - Power Puzzler 2
		Why?: The power supply used in this example is designed to deliver 12 V at 2.5 A, which equates to a nominal maximum power of 30 W. Graph A was measured with no overload power compensation.
		The graph shows that the power supply is capable of delivering approximately 200 % of rated maximum output power at high input voltage (approximately 60 W) versus approximately 130% of rated maximum output power at low input voltage (approximately 40 W).
		Waveform X corresponds to a case where the output power is similar at both 85 VAC and 265 VAC input voltages.
	www.powerint.com /powerpuzzler050330/index.html (1017 words)

	Synchronous Machine (Power System Blockset)
		The nominal field current is the current that produces nominal terminal voltage under no-load conditions.
		The nominal field current makes it possible to compute the transformation ratio of the machine, which allows you to apply the field voltage viewed from the rotor, as in reality.
		However, the parameters must now be entered in per unit using the nominal field current, multiplied by the d axis mutual inductance, and nominal rms line-to-line voltage as base values for the field current, and terminal voltage, respectively.
	www.tau.ac.il /cc/pages/docs/matlab/help/toolbox/powersys/synchronousmachine.html (1539 words)

	weapon systems
		Unable to compete with the heavy particle GOD cannon in terms of raw power, it is instead a good choice to give a long range punch to new medium and light units, and can be retrofitted on older ships, at a fair cost, without overwhelming their power distribution plant.
		Initially deemed as a surdimensionated and power thirsty system, it proved itself excellent, someway decisive during the Dilgar war and was one of the few effective weapons during the Minbari conflict, being able to cleanly bore through the armor of the main hull of the Sharlin cruisers.
		The piercing power of the small 127 mm penetrator used by the "Super Rapido" series railguns is well enough to pierce all the known hulls, even the ones belonging to the most advanced races, and the rate of fire allows a devastating saturation fire.
	efni.org /weapon.htm (5470 words)

	Enermax Liberty Power Supply \| Hardware Secrets
		Funny enough Enermax calculations to find the power supply total power capacity assume a combined current of 32 amps for these two 12 V rails instead of 44 amps.
		Making the math to check if this power supply nominal power is really of 500 W or not is a little bit tricky.
		We think its price is right for a power supply with such power specs and we would buy it without thinking twice if we were looking for a true 500 W power supply.
	www.hardwaresecrets.com /printpage/303/3 (471 words)

	Real vs Nominal Variables -- Basic Material
		The common method of deflating a nominal to obtain a real variable is to rid the nominal variable of its currency unit.
		If the initial nominal variable is measured with a currency unit, one must divide by another nominal variable (with the same currency unit) in order to obtain the a real measure of the original variable.
		If the initial nominal variable is the rate of change of a nominal variable, then one must subtract the rate of change of another nominal variable in order to obtain a real value for the initial nominal variable.
	www.colorado.edu /econ/courses/roper/basics/real-vs-nominal-variables.html (1427 words)

	IRAN YELLOW PAGES - Iranian infomation at your fingertip (Site not responding. Last check: 2007-10-25)
		Tehran Bargh Institute, a power plant with a generating capacity of 6,000 kW, being commissioned in Tehran in 1905, was later renamed to "Central Power Organization".
		Some 95% of the electricity power was generated by the Ministry of Power's affiliated units in the year 2000, the rest by the private sector.
		Total nominal power capacity of power plants in Iran was 26,373 megawatt in March 2001, 52% of which belonged to steam plants, 38% to gas-combined cycle power plants, 7.6% to hydraulic plants and the remainder to diesel plants
	www.iranyellowpages.net /en/about_iran/Economy/electricity_industry/electricity_industry01.shtm (664 words)

	World Nuclear Association \| Nuclear Portal \| Nuclear Power Plants (Site not responding. Last check: 2007-10-25)
		Novovoronezh Nuclear Power Plant - The commissioning of unit 1 on 30 September, 1964 started the history of operation and development of the Novovoronezh Nuclear Power Plant, one of the earliest nuclear power plants in Russia.
		Paks Nuclear Power Plant - The company was founded in 1976 and has been operating as a share company since 1992.
		Yankee Nuclear Power Plant - The Yankee Nuclear Power Station - also known as 'Yankee Rowe' - was the third nuclear power plant built in the US and the first built in New England.
	www.world-nuclear.org /portal/nuclear_power_plants.htm (791 words)

	débit nominal installé - rated / nominal output (French to English translation glossary) outdoor stove,Energy / Power ...
		It is refer to electrical power, if it were refer to the air flow, it would have been "nominal rated air flow" or simply "nominal air flow".
		The "puissance installée" (installed capacity) of a hydro generator is the power the scheme is designed to produce, just as the "débit nominal" is the rated discharge of the turbines producing the motive force to generate that power.
		It seems that "nominal" and "installed" and "capacity" and "power" may be interchangeable.
	www.proz.com /kudoz/1726138 (1041 words)

	nominal (definition)
		[a] insignificantly small; a matter of form only; "the fee was nominal"; "a token gesture of resistance"; (`tokenish' is informal as in "a tokenish gesture").
		[a] (economics) being value in terms of specification on currency or stock certificates rather than purchasing power; "nominal or face value".
		[a] pertaining to a noun or to a word group that functions as a noun; "nominal phrase"; "noun phrase".
	lookwayup.com /lwu.exe/lwu/d?s=f&w=nominal (122 words)

	Headphone Adaptor for Power Amplifiers
		The level of 5V RMS was chosen to ensure that the power amplifier will not clip when driving the headphones, but is much too high for normal listening.
		The nominal voltage and actual output impedance are also shown, and as you can see, the variation is very small.
		This prevents power being fed to headphones for no good reason, and also prevents "extraneous" sound when you are listening to the speakers.
	sound.westhost.com /project100.htm (925 words)

	The Clash of Civilizations - Government Model (Site not responding. Last check: 2007-10-25)
		That political power is real political power, which counts in the nominal or by law political power and de facto influences classes have leading to a higher political power than law says they should have.
		It represents how a class X can buy the sympathy of other classes to encourage them to use their legal (nominal) power in the benefit of class X. Because of this, all values described above should be multiplied by the total nominal political power other classes have.
		That's why de facto influences are really those values given above, but multiplied by all possible nominal power the class can actually "buy" from others, which excludes the ruler (otherwise the player would be giving away power without wanting it) and excludes the power high officers loyal to the ruler in the MC have.
	cullivan.com /coc/models/Model-Government-2.shtml (2654 words)

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