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	SNUBBER DESIGN CONSIDERATIONS The function of the snubber network is to limit the rate of change of the voltage across ...
		The function of the snubber network is to limit the rate of change of the voltage across the motor (out- put terminals of the L6203) when one of the DMOS devices is turned off.
		This peak current flowing in the snubber is added to the load current when the device is turned on and the total peak current in the transistor is the sum of the snubber circuit current plus the load current.
		The power dissipated in the snubber resistor is the sum of the dissipation during the turn-on and turn-off of the bridge.
	homepages.which.net /~paul.hills/Emc/Snubbers.html (514 words)

	Snubber for a hydraulic motor - Patent 5680913
		The snubber of claim 6 wherein the first spring is positioned around the second end portion of the snubber stem between the stop means and the bore in the piston rod.
		The snubber stem has a first operative position wherein the snubber is spaced from the end of the cylinder and a second operative position wherein the snubber stem is in contact with the end of the cylinder.
		A flow restricting passage means in the snubber stem is provided for communicating the actuating chamber with the fluid passage in the end of the cylinder when the snubber stem is in the second operative position to dampen the end of stroke movement of the piston rod assembly.
	www.freepatentsonline.com /5680913.html (2323 words)

	Snubber - Wikipedia, the free encyclopedia
		Snubbers are frequently used with an inductive load where the sudden interruption of current flow would lead to a sharp rise in voltage across the device creating the interruption.
		Snubbers are also often used to prevent arcing across the contacts of relays (and the subsequent welding/sticking of the contacts that can occur).
		Placing the snubber diode in inverse parallel with the inductive load allows the current from the inductor to flow through the diode rather than through the switching element, dissipating the energy stored in the inductive load in the series resistance of the inductor and the (usually much smaller) resistance of the diode (over-voltage protection).
	en.wikipedia.org /wiki/Snubber (481 words)

	U.S. Patent: 6016095 - Snubber for electric circuits - January 18, 2000
		With this snubber, the number of cores to use, and the size of the individual cores are additional variables available to the designer to optimize the snubber.
		Snubber circuits assembled of components with leads are less effective at high frequencies because the "lead inductance" becomes a significant impedance at high frequencies.
		The inductance of the snubber 23 or 25 is reduced in proportion to the number of cores 27-27 used in parallel.
	www.everypatent.com /comp/pat6016095.html (4247 words)

	Snubber
		The “Snubber” was designed to give a little flexibility to your all-chain anchor rode.
		The “Snubber” also will allow you to anchor and not have that little jerk when the wind changes direction.
		Removing the “Snubber” is accomplished by pulling the rode (with the “Snubber” in place) to the anchor roller, then use a boat hook to grab the eye of the "Snubber" to release the chain.
	www.islandmarineproducts.com /snubber.htm (214 words)

	Snubber Circuits Suppress Voltage Transient Spikes in Multiple Output DC-DC Flyback Converter Power Supplies - ...
		Snubbers can also be classified as polarized or non-polarized depending on whether energy moves in or out of the snubber at either switching edge or at both.
		In the clamp mode the purpose of the snubber is to clamp the voltage during turn-off at the drain of the MOSFET.
		When the RCD snubber is used to control the rate of voltage rise at the MOSFET drain, the capacitor must be completely charged and discharged during each cycle to be able to control the rate-of-rise of the drain voltage.
	www.maxim-ic.com /appnotes.cfm/appnote_number/848 (2290 words)

	BLE > Products > Snubber circuits
		Overvoltages might be caused by the carrier storage effect of the power semiconductor or by the switching processes in the main current or in the current supply itself, for example by disconnecting the supply transformer.
		Snubber network B6C-BE This snubber network is used for the reduction of commutation-overvoltages and especially as a restriction of overvoltages while switching off the power-transformer.
		For rectifiers with thyristors the snubber networks are absolutely necessary and also for rectifiers with diodes if they are disconnected from the mains without load.
	www.ble-elektronik.de /produkte/beschaltungen/index_e.php (295 words)

	Seismic Snubber - Model HS-1
		Snubbers, when anchored to the building structure and placed around vibration-isolated equipment, are intended to limit motion by containing the supported equipment.
		Snubbers shall be welded steel and shall be attached to the building structure in a manner consistent with anticipated loads and shall meet current building codes.
		Snubbers shall include a resilient pad to cushion any impact and shall be installed so as to be free of contact during equipment operation.
	www.kineticsnoise.com /hvac/hs1.html (676 words)

	Information Notice No. 84-67: Recent Snubber Inservice Testing with High Failure Rates (Site not responding. Last check: )
		The cause was attributed to insufficient counter boring of the valve block end-cap for the hydraulic snubber, which inhibited the shuttle valve from properly closing the appropriate block port.
		All three of the tested snubbers failed to meet the specified requirements in that the mechanical seals in the snubbers failed to hold hydraulic fluid at test loads of only 10 to 33 percent of the rated capacity of 2,400 kips.
		Because not all snubbers are tested during each testing period (unless significant failure rates are detected), testing at rated load should not place an undue strain on the snubbers that could shorten their expected life.
	www.nrc.gov /reading-rm/doc-collections/gen-comm/info-notices/1984/in84067.html (1329 words)

	Electronic Film Capacitors, Inc. d/b/a EFC/Wesco Snubber / Power Capacitors
		Over the recent past, new technologies have increased the demand for high current power capacitors with high reliability and condensed size.
		EFC has designed a series of Snubber / Power Capacitors specifically for these requirements.
		Snubber / Power Capacitor Application Options: Series M1206
	www.filmcapacitors.com /snubbers.htm (188 words)

	Power Supply Design: Snubber Design
		Original Question: In clamp and snubber circuits for flybacks, to reduce voltage spikes at switch-off in the MOSFET drain, the common practice consists of a diode and a resistor paralleled to a capacitor.
		None of us had ever heard the word snubber -- it was just wave shaping and EMI control, and we used as many lossy ferrite beads as we did lossy capacitors for this purpose (lossy to damp high-frequency ringing) and made our cores lossy above the switching frequency.
		One way of looking at them is that the lossless snubber circuits can be viewed as miniature switching-mode powers supplies and much of the some thinking applies.
	www.smpstech.com /mtblog/snubber_design.html (605 words)

	PT&P Products: Mechanical Snubbers
		The smaller drive cylinder is used for snubbers rated to 6000 lb., and the larger drive cylinder is used for snubbers rated up to 150,000 lb.
		The Hydraulic Snubber test Machine is mainly used to perform testing for hydraulic snubbers, it has a similar test bed like the STADAS machine, however, it is not computer controlled.
		Mechanical snubbers can also be tested on this machine, but due to the complication of the process, mechanical snubbers testing is usually performed on the STADAS machine.
	www.pipingtech.com /products/snubbers_mech.htm (868 words)

	motor and power supply control components/systems
		The TSB-1 snubber board is used for one dual SCR module, such as a single-phase AC controller.
		The TSB-2 snubber board would be used for two dual SCR modules such as might be found in a single-phase DC bridge application.
		The TSB-3 snubber board is typically used in 3-phase AC controller applications, or for a 3-phase semi-converter DC bridge.
	www.enerpro-inc.com /html/snub.html (260 words)

	snubber
		My personal experience with RC snubbers shows that they DECREASE efficiency.The positive effect is that of suppressing the voltage spikes thus protecting the transistors or diodes.Lossless diode snubbers should not suffer this efficiency problem.BUT only if the diode is fast.
		Snubber circuits are used to modify the switching waveforms of power semiconductor switches.
		The snubber diode should be in forward bias during turn on/off of your mosfet.
	www.edaboard.com /ftopic88963.html (667 words)

	Piping Technology&Products, Inc. - Technical
		In rare installations, the snubber may be expected to move in the negative direction by some known amount.
		At the operating conditions the snubber should have at least 1 in of possible travel.The snubber should be installed with its axis parallel to the direction of expected impulsive load.
		The snubber should be mounted so that the major expected thermal movement is in the plane of the ball joints.The overall length is adjustable from 2" to 6" by means of the threaded rod on the extension end of the unit.
	www.pipingtech.com /technical/im/snubbers.htm (538 words)

	COOL CATS: Advanced Info: Pinion Snubber
		This is essentially a rubber bushing on a metal mount that bolts to the underside of the rear floorpan, right above the rear axle.
		While it may be tempting to use a factory Mustang unit, there is a big difference in floorpans between the two cars.
		The Mustang's metal is significantly reinforced to handle the stresses of a pinion snubber; the Cougar is not.
	www.coolcats.net /tech/advanced/pinionsnubber.html (228 words)

	Snubber circuit patent invention
		Snubbing is accomplished by selectively storing energy in a capacitor during one portion of an operating cycle and discharging the energy during a second portion of the cycle.
		Reducing the size of the snubber capacitor of course solves this problem but may well result in a capacitor incapable of controlling the ringing.
		3 snubber circuit, different resistance and/or current, which may be either higher or lower, is provided as required for damping and turn on.
	freshpatents.com /Snubber-circuit-dt20060406ptan20060072259.php?... (1138 words)

	CCFL Push-Pull Snubber Circuit - Maxim/Dallas
		Add a shunt capacitor across the drain-source of the MOSFET (not the resistor, just the capacitor) and adjust the value of this capacitor until the frequency of the spike resonance is reduced by a factor of two.
		The resistor in the RC snubber circuit should be sized to the value of the characteristic impedance, and the capacitor should be sized between four and ten times the parasitic capacitance.
		In this section, using the five-step procedure outlined previously, the proper values for the resistor (R) and capacitor (C) snubber circuit to reduce the Figure 1 voltage spikes are determined.
	www.maxim-ic.com /appnotes.cfm/appnote_number/3835 (803 words)

	NCSL International Forums - Calibration of Snubber Test Benches
		It seems DPC has procured several from Diacon Corporation and they have suggested to the site engineers their calibration of the entire system is better than calibrating the separate components.
		We have a Wyle 150 machine as well as rent the Barker/Diacon machine for large bore snubber testing and contract Wyle to calibrate the machines under their program and supply us with a calibration package for outage use.
		Barker/Diacon is one of the better snubber test machines in the business today and is heavily involved with Basic-PSA the industries largest snubber supplier.
	www.ncsli.org /forum/topic.asp?TOPIC_ID=135 (532 words)

	Anchor Chain Snubber Line at Rope Inc.
		Line Snubber pictured at left fits 5/16" (8mm) to 3/8" (10mm) Chain; it retails for $191.64 and has a working load rating of 3,000 pounds.
		Using a Rope, Inc. Snubber properly prevents transferring shock load from the chain to your windlass and boat.
		Removing the Rope, Inc. Snubber is easy too; simply pull your anchor rode up until the Stainless Hook gets close to the anchor roller.
	www.ropeinc.com /anchor-chain-snubber-line.html (366 words)

	Snubbers - Adjustable Choke Valves, Pressure Gauge Protection
		DP snubbers are the economical and ingenious way to keep pressure gauges working accurately and dependably.
		We sell snubber resistor products that are fully field adjustable to protect most any gas, liquid, chemical or air filtration systems.
		DP offers these adjustable choke valve snubber products at the lowest cost in the industry.
	www.differentialpressure.com /snubbers.html (533 words)

	Definition of snubber - Merriam-Webster Online Dictionary
		Learn more about "snubber" and related topics at Britannica.com
		Find more about "snubber" instantly with Live Search
		See a map of "snubber" in the Visual Thesaurus
	www.m-w.com /cgi-bin/dictionary?book=Dictionary&va=snubber (26 words)

	Ridley Engineering
		To design the snubber for the power FET of a flyback circuit, for example, first run the circuit at low power with an oscilloscope probe on the drain waveform with
		In some cases you will be able to decrease it by 30% or so, but any less than this and the snubber will be less effective.
		Size the resistor according to the dissipation it will see: P = C(VxV)Fs where V is the voltage on the device when it is off.
	www.ridleyengineering.com /snubber.htm (512 words)

	GTO :: Blocks (SimPowerSystems)
		The GTO block cannot be connected in series with an inductor, a current source, or an open circuit, unless its snubber circuit is in use.
		The basic polarized snubber circuit is connected across the GTO block.
		The snubber circuit consists of a capacitor Cs, a resistor Rs, and a diode Ds.
	www.mathworks.com /access/helpdesk/help/toolbox/physmod/powersys/ref/gto.html (817 words)

	Grapple snubber (US4679839)
		A pair of snubbers respectively encircle the pivot rod.
		Each snubber includes a ring-shaped hydraulic cylinder having a ring-shaped piston therein.
		Hydraulic fluid introduced into the cylinder extends the respective pistons to effect snubbing between the body and the arm in between the grapple and the body.
	www.delphion.com /details?pn10=US04679839 (164 words)

	Become.com - Shop results for snubber
		Don?t be left without a couple extra Rubber Snubbers when on the trail.
		It's a good idea to have a couple of replacement snubbers on hand, just in case you accidentally lose one in the predawn darkness of a hunt...
		We stock these snubbers in both "fire" (bright red) and chartreuse color and in 6" 8" and 12" lengths.
	www.become.com /shop?q=snubber (243 words)

	Applications - Snubber Noise and Arc Suppressor: Branom Instrument Company
		The R-C Snubber is intended to suppress the "inductive kick" from motors, solenoids or relay coils.
		Applied across an inductive load, the R-C snubber suppresses the noise spikes and extends contact life.
		Placing the suppressor across the contact in many cases can work as well, but for maximum effect, it is best to place the suppressor directly across the load.
	www.branom.com /literature/snubber.html (160 words)

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