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	Electrode for a liquid rheostat, and a liquid rheostat including such an electrode - Patent 4325049
		The liquid rheostat according to claim 5, wherein said generally annular elements progressively decrease in size, for increasingly varying surface area of consecutive annular elements immersible in the electrolyte and thereby the resistance of said rheostat.
		The liquid rheostat according to claim 5, wherein the electrode comprises a single continuous spirally wound electrically conducting metal strand forming a plurality of adjacent turns, each said turn defining one of said generally annular elements of said electrode.
		The liquid rheostat according to claim 5, said hollow configuration of said electrode being downwardly tapering for increasingly varying the surface area of consecutive annular elements immersible in the electrolyte and thereby the resistance of the rheostat.
	www.freepatentsonline.com /4325049.html (2387 words)

	Potentiometers: Rheostats - 20 Ohm to 99.9 Ohm
		Rheostat, 25 ohm, 1.41 amp - 250 ohm,.45 amp, 50 watt.
		Rheostat, 37 ohm, 50 watt, 30 ohm, 75 watt.
		Rheostat, 50 ohm,.71 amp, 25 amp, 1/4" shaft.
	www.surplussales.com /Potentiometers/Rheostats/PotsRheost-2.html (251 words)

	Rheostats
		A good rule of thumb is to use a rheostat equal in value to the fan resistance — this will reduce the voltage across the fan to half the supply, 6 volts.
		Manufacturers such as Vishay quote a wattage value based on the current-carrying capacity of the rheostat wire or coating, and higher-resistance rheostats in a model range use thinner stuff than the low-resistance ones.
		For wire-wound rheostats only, the manufacturer allows some overload when only a fraction of the turns on the rheostat are carrying current — the hot section loses some heat to the unused cold wire by conduction.
	www.cpemma.co.uk /rheo.html (747 words)

	Potentiometers: Rheostats - .5 Ohm to 19.9 Ohm
		Rheostat, 3 ohm, 10 amp, 300 watt, 3/8" shaft.
		Rheostat, 6 ohm, 2.04 amp, 25 watt, 1/4" shaft.
		Rheostat, 7.5 ohm, 6.32 amp, 300 watt, 3/8" shaft.
	www.surplussales.com /Potentiometers/Rheostats/PotsRheost-1.html (236 words)

	Fixing Rheostats
		Rheostat is a fancy name for a variable controller and you can fix them.
		A rheostat is a variable controller that directs the amount of current flowing to many smaller appliance components.
		As the probes are moved along the rheostat wire, the reading should change incrementally.
	www.bobvila.com /HowTo_Library/Fixing_Rheostats-Electrical_Devices-F2182.html (215 words)

	Rheostat Tutorial-- CaseETC.com - How to Make a Reheostat Fan Bus Controller? Guides Instructions Tips (Site not responding. Last check: 2007-08-08)
		Rheostats are similar to potentiometers; the rheostats are controlled by a knob that controls the voltage intake using resistance.
		If you would like all fans on one rheostat, there wouldn't be a problem with using a 25W rheostat, however those run upward to $40 a peice.
		This is done by the rheostat using that extra fan power at the lower side of resistance.
	www.caseetc.com /cgi-bin/caseetc/rheostat.html (587 words)

	Rheostat for laboratory
		RC linear rheostats are made up of one or more cylindrical pipes in porcelain, on which the resistive alloy wire is wound and of one or more contacts sliding on the winding along cylinders generators moved via a knob or otherwise.
		Choice of materials: the special porcelain cylindrical pipe offers a high mechanical and thermal shock resistance; the resistive alloy is generally costantan with a neglectable temperature coefficient, supporting plates and protection sheets are oven painted at a high temperature thus guaranteeing colour permanence and life.
		Rheostat can be supplied respectively with six or nine output terminals.
	www.italtec.it /enreosta.htm (140 words)

	Resistance Boxes and Rheostats
		The middle picture shows Wheatstone's other form of rheostat, in which a single wooden cylinder with a helical groove onto which a wire of uniform cross-section is permanently wound.
		The instrument at the bottom is a rheostat by Elliott Brothers of London, on display at Vanderbilt University as part of the Garland Collection of Classical Physics Apparatus.
		Physics departments used to be heavily equipped with tubular rheostats, used to pick off a certain fraction of an EMF or, more commonly, as a heavy duty variable resistor to limit current.
	physics.kenyon.edu /EarlyApparatus/Electrical_Measurements/Resistance_Boxes_and_Rheostats/Resistance_Boxes_and_Rheostats.html (1663 words)

	NO rheostat! - Electrical - BBS - BobVila.com
		The main feature of a rheostat would be to generate lots of heat at the controls.
		A rheostat is just an adjustable resistor that is in series with the load and has to disapate a large amount of power depending on the load and setting of the rheostat.
		The later are often mis called as rheostats, but actually use electronic switch (Triacs) which control the turn of of the power 120 times a second.
	www.bobvila.com /BBS/NO_rheostat-Electrical-1-T4968.html (202 words)

	What is a rheostat and does my heater blower fan has one? - BlurtIt
		A rheostat, or variable resistor, is what is used to vary the intensity of lighting in such things as car instrument panels.
		A rheostat consists of a length of coiled resistance wire,one end of which is connected to the live feed wire.
		A second wire runs from the rheostat to the load via a movable element called a wiper.
	www.blurtit.com /q980732.html (342 words)

	Liquid Rheostat
		Liquid rheostats have been installed in all types of environmental conditions from the cold temperatures of Alaska to the high humidity of Hawaii.
		The liquid rheostat variable speed controller changes the speed of a wound rotor motor and centrifugal pump in response to changes in process demand.
		As the electrolyte solution rises in the rheostat, the electrical resistance decreases causing the speed of the motor to increase.
	www.flomatch.com /liquid.htm (587 words)

	Load Based Analysis
		Imagine a rheostat tied to a fixed resistor as a transistor amplifier: The rheostat is working against that fixed resistor just as a transistor works against its collector load resistor.
		As the rheostat's resistance is decreased, more current is made to flow through the fixed Load Resistor, which causes a corresponding increase in the voltage dropped across that Load Resistor.
		As the rheostat's resistance is increased, less current is made to flow through the fixed Load Resistor, which causes a corresponding decrease in the voltage dropped across that Load Resistor.
	www.williamson-labs.com /480_load.htm (690 words)

	Cliff's Fanbus-Rheostat BayBus Tutorial (Site not responding. Last check: 2007-08-08)
		The nuts that hold the rheostats onto the faceplate will sandwich the project box, but there is little room for error.
		When you are satisfied with the fit, attach the nuts to the switch and rheostats to affix the plate to the box.
		A rheostat with too great a resistance will stall the fans before reaching minimum turn, whereas a rheostat with too little resistance will not provide a broad enough range of speeds.
	www.fanbus.com /thelab/rheostat.htm (1177 words)

	bit-tech.net \| Adding Fan Speed Control
		All we need to do is insert a rheostat or variable resistor in the 12V wire to the fan.
		The rheostat should be rated at least 3 Watt, (for fans up to 10Watt), and have a resistance of 20 — 50 Ohms.
		Decide on a suitable location for the rheostat and drill a hole in the case for it.
	www.bit-tech.net /article/56 (407 words)

	Ohmite: Rheostat and Tap Switch Hardware
		Any knob can be used with any rheostat and tap switch model which has the corresponding shaft diameter.
		Recommended for rheostat models H, J, G, K, L. Recommended for rheostat models C, E. Handsomely finished, fl-enameled, aluminum dials for Ohmite rheostats and tap swiches.
		On rheostat dials, divisions indicating approximate percentage of rheostat resistance in circuit are marked from 0 to 100.
	www.ohmite.com /catalog/rheostat_hardware.html (219 words)

	dash light rheostat
		Rheostats are like ballast resistors, when they're working they're working, when they're not they're broken.
		The rheostat was designed to work with a certain dash that has a certain amount of lights connected to it.
		The rheostat is an adjustable resistor, that controls the current to the dash lights.
	www.hotrodders.com /t11384.html (804 words)

	Overclocker Cafe - Rheostats and You!
		To start with, let’s explain what a Rheostat is being that you will hear about it often, but rarely what it does or how it works.
		The most direct explanation without getting all into electrical resistance and such, is that a Rheostat is a small device that controls the voltage flow via a dial or knob.
		A BayBus is a small box with several Rheostats that let you control the speed of multiple fans.
	www.overclockercafe.com /Articles/Rheostat/index.html (646 words)

	Euro Forum 2002 - Rheostat
		i also have a 406 p reg and the (i dont know if its called rheostat) illuminating light on the dashboard, the one that lights up tells you the aircon or heater is on...
		the rheostat is the unit that controls the brightness of your illuminating lights.
		When you say is fading, it could be to the rheostat since it controls the brigtness of the lights.
	www.eurocarparts.com /forum/topic.asp?TOPIC_ID=6158 (262 words)

	Submarine Periscope Manual - Chapter 6
		The insulating plate is supported by the rheostat mount plate (27) and is separated from it by three bulb and rheostat mount plate spacers (26) and a bulb and rheostat mount plate key spacer (28).
		The rheostat operating knob (34) is made of fl bakelite with a clearance hole in its inner axis, and is a sliding fit on the rheostat assembly shaft secured with a taper pin (43) and lockscrew (35).
		The light intensity is adjustable by counterclockwise rotation of the rheostat operating knob from maximum intensity to minimum intensity as desired by the observer.
	www.maritime.org /fleetsub/pscope/chap6c.htm (16267 words)

	rheostat. The Columbia Encyclopedia, Sixth Edition. 2001-05
		Typically a rheostat consists of a resistance element equipped with two contacts, or terminals, by which it is attached to a circuit: a fixed contact at one end and a sliding contact that can be moved along the resistance element.
		In this way the current through the circuit can be increased or decreased.
		Rheostats are widely used for such purposes as controlling the speed of electric motors and dimming electric lights, but they have been replaced in many applications by systems based on semiconductor devices that waste far less power.
	www.bartleby.com /65/rh/rheostat.html (203 words)

	Ceramide/Long-Chain Base Phosphate Rheostat in Saccharomyces cerevisiae: Regulation of Ceramide Synthesis by Elo3p and ... (Site not responding. Last check: 2007-08-08)
		Ceramide/Long-Chain Base Phosphate Rheostat in Saccharomyces cerevisiae: Regulation of Ceramide Synthesis by Elo3p and Cka2p.In fact, elo3 mutants were found to accumulate high levels of LCBs and LCBPs.
		In order to gain further insight into the function of the rheostat in Saccharomyces cerevisiae, we searched for mutants that are synthetically lethal with a deletion of the LCB3 gene encoding LCBP phosphatase.
		The cka2 mutants, on the other hand, exhibited only 25 to 30% of the in vitro CS activity found in wild-type membranes, indicating that the alpha' subunit of CK2 kinase is necessary for full activation of CS.
	www.pdg.cnb.uam.es /UniPub/iHOP/gp/10014968.html (386 words)

	Serotonin receptor: A rheostat in brain for emotion that may be linked to depression
		Serotonin receptor: A rheostat in brain for emotion that may be linked to depression
		Much like a rheostat, these serotonin receptors regulate the brain's emotional responses and may contribute to one's vulnerability for depression and other psychiatric disorders.
		The amygdala is a critical component of brain circuitry that processes clues from the environment about potential threats and generates appropriate behavioral and physiological responses — such as the "fight or flight" response — to these challenges.
	www.eurekalert.org /pub_releases/2006-10/uopm-sra092806.php (763 words)

	Basic Electrical Circuit Materials and Metering
		A rheostat is rated by its maximum resistance value and the maximum power it can handle.
		A rheostat is used primarily as a current control device.
		A rheostat can be made from a potentiometer by connecting the wiper and one of the end terminals together.
	www.hcc.hawaii.edu /~sdunan/cent112/notes/02Metering (2605 words)

	Thermodynamics Glossary - Load Rheostat (Site not responding. Last check: 2007-08-08)
		The load control rheostat is used in starting the engine and in controlling the load applied to the engine by the dynamometer during steady state operation.
		The rheostat controls the current to the field coils of the motor/generator, increasing this current increases the torque of the device.
		Once the engine is running, move the function switch to the Generator or Load position and move the Load Rheostat to a position that maintains steady engine operation.
	www.princeton.edu /~humcomp/sophlab/ther_87.htm (117 words)

	Potentiometer as a rheostat : DC CIRCUITS (Site not responding. Last check: 2007-08-08)
		In its simplest configuration, a potentiometer may be used as a rheostat by simply using the wiper terminal and one of the other terminals, the third terminal left unconnected and unused:
		If your potentiometer has a high resistance (as measured between the two outer terminals), the motor might not move at all until the wiper is brought very close to the connected outer terminal.
		As you can see, motor speed may be made variable using a series-connected rheostat to change total circuit resistance and limit total current.
	www.allaboutcircuits.com /vol_6/chpt_3/7.html (709 words)

	Rheostat range limiting : DC CIRCUITS (Site not responding. Last check: 2007-08-08)
		This experiment explores the different resistance ranges obtainable from combining fixed-value resistors with a potentiometer connected as a rheostat.
		If we wish to shift the span of this rheostat circuit as well, we must change the range of the potentiometer itself.
		There is nothing we can do to increase the span of this rheostat circuit, short of replacing the potentiometer with another of greater total resistance.
	www.allaboutcircuits.com /vol_6/chpt_3/9.html (635 words)

	Trains.com - Electronic problem / In Summary! (Site not responding. Last check: 2007-08-08)
		If you can be sure the load is constant, like a light or motor that runs all the time, you can use a rheostat, adjusted to give the correct voltage at the (constant) load current.
		However if the load turned out to be.5 ampere, the rheostat could be set to 7 ohms, for a total of 12.
		With a rheostat, turning one light off (or having one burn out) will raise the voltage to all that are left.
	www.trains.com /community/forum/topic.asp?TOPIC_ID=36136 (2242 words)

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