Where results make sense

About us   |   Why use us?   |   Reviews   |   PR   |   Contact us

Topic: Q-switching

    Note: these results are not from the primary (high quality) database.

Ads by Google

Related Topics

Laser

Q factor

Quartz oscillator

Glitch

Electromagnetic spectrum

RLC circuit

Iluin

Anarchism and violence

Search engine

Social justice

Friedrich August Wolf

Norfolk, Connecticut

Gneisenau

M242

Zoonosis

Switching barriers - Wikipedia, the free encyclopedia Switching barriers or switching costs are terms used in microeconomics, strategic management, and marketing to describe any impediment to a customer's changing of suppliers. The importance of understanding switching costs has been emphasised with the rise of information technologies, since switching costs seems to be a phenomenon that is especially strong in the so called information economy. When a consumer faces switching costs it will not pay for the consumer to switch to the supplier offering the lowest price if the switching costs in terms of effort, time, uncertainty, and other reasons, outweigh the price differential between the two suppliers. en.wikipedia.org /wiki/Switching_barriers

Message switching -- Facts, Info, and Encyclopedia article In ((often plural) systems used in transmitting messages over a distance electronically) telecommunications, message switching was the precursor of (additional info and facts about packet switching) packet switching, where messages were routed in their entirety, one hop at a time. Message switching systems are nowadays mostly implemented over packet-switched or circuit-switched data networks. ((computer science) a system of world-wide electronic communication in which a computer user can compose a message at one terminal that is generated at the recipient's terminal when he logs in) E-mail is another example of a message switching system. www.absoluteastronomy.com /encyclopedia/m/me/message_switching.htm   (147 words)

Q-switching - Wikipedia, the free encyclopedia Pulses of light from another laser (the "master oscillator") are injected into the cavity by lowering the Q to allow the pulse to enter and then increasing the Q to confine the pulse to the cavity where it can be amplified by repeated passes through the gain medium. The cavity Q goes from low to high to start the laser buildup, and then goes from high to low to "dump" the beam from the cavity all at once. This attenuation inside the cavity corresponds to a decrease in the Q factor or quality factor of the optical resonator. en.wikipedia.org /wiki/Q-switching   (1151 words)

Bank switching - Wikipedia, the free encyclopedia Bank switching (also known as paging, but only loosely related to the ordinary meaning of this term in computing) was a technique common in 8-bit microcomputer systems, to increase the amount of addressable RAM and ROM without extending the address bus. It was a form of bank switching technique that allowed more than the 640 KB of RAM foreseen by the original IBM PC architecture, by letting it appear piecewise in a 64KB "window" located in the Upper Memory Area. Bank switching was later replaced by segmentation in 16-bit systems. en.wikipedia.org /wiki/Bank_switching   (276 words)

Packet switching - Wikipedia, the free encyclopedia Packet switching influenced the development of the Actor model of concurrent computation in which messages sent to the same address may be delivered in an order different from the order in which they were sent. Packet switching is used to optimize the use of the bandwidth available in a network, to minimize the transmission latency (i.e. This contrasts with the principal other paradigm, circuit switching, which sets up a dedicated connection between the two nodes for their exclusive use for the duration of the communication. en.wikipedia.org /wiki/Packet_switching   (1113 words)

Encyclopedia: Voltage regulator Switching regulators are required when the only power supply is a DC voltage, and a higher output voltage is required. That is followed by a linear regulator that generates exactly the desired voltage and eliminates nearly all the noise generated by the switching regulator. Switching regulators are also able to generate output voltages which are higher than the input, or of opposite polarity - something not possible with a linear design. www.nationmaster.com /encyclopedia/Voltage-regulator   (1793 words)

Q-switching - Wikipedia, the free encyclopedia Q-switching was discovered circa 1962 by R.W. Hellwarth and F.J. McClung using electrically switched Kerr cell shutters in a ruby laser. The Q is a measure of how much light from the gain medium of the laser is fed back into itself by the resonator. Because of the large amount of energy already stored in the gain medium, the intensity of light in the laser resonator builds up very quickly; this also causes the energy stored in the medium to be depleted almost as quickly. en.wikipedia.org /wiki/Q-switching   (766 words)

Encyclopedia: Switching regulator Switching regulators are used as replacements for simpler linear regulators when higher efficiency, smaller size or lighter weight are required. The switching is done by MOSFETs, which are a type of transistor with a low on-resistance and a high current-handling capacity. If an input range switch is used, the rectifier stage is usually configured to operate as a voltage doubler when operating on the low voltage (~120 vac) range and as a straight rectifier when operating on the high voltage (~240 vac) range. www.nationmaster.com /encyclopedia/Switching-regulator   (1529 words)

United States Patent Application: 0040092238 In that case, the gain states associated with the different gains of the conditioning components of receiver 14 would be implicit in the presence of discrete gain switching. In some cases, it may be desirable to cause gain state switching even if A/D converter 30 is not saturated, e.g., in order to ensure that jammer signals are not demodulated. the gain of amplifier 22 and the gain of mixer 24. appft1.uspto.gov /netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=/netahtml/PTO/srchnum.html&r=1&f=G&l=50&s1="20040092238".PGNR.&OS=DN/20040092238&RS=DN/20040092238   (6551 words)

Gain-switching -- Facts, Info, and Encyclopedia article The term gain-switching derives from the fact that the optical gain is negative when carrier density or pump intensity in the active region of the device is below threshold, and switches to a positive value when carrier density or the pump intensity exceeds the lasing threshold. Notice the depletion in carrier density during the pulse, and its subsequent rise due to continued current injection giving rise to a smaller secondary pulse. Since the pump pulses are of short duration, optical gain is only present in the laser for a short time, which results in a pulsed output. www.absoluteastronomy.com /encyclopedia/g/ga/gain-switching.htm   (291 words)

High-speed queue sequencer for a burst-switching communications system - Patent 4646294 Burst switching is expected to permit the extraction of new services and bandwidths from the existing plant by moving much of the switching into the plant. Burst switching employs silence (or speech) detection so that system resources such as transmission channels are dedicated only while there is information to send, that is, during the burst. Bursts are sent between switches in time-division multiplexed channels of the span, with succeeding characters of the burst being transmitted in succeeding frames of the span. www.freepatentsonline.com /4646294.html   (19779 words)

Distributed switching - Wikipedia, the free encyclopedia Distributed switching provides improved communications services for concentrations of users remote from the host switch, and reduces the transmission requirements, i.e. Distributed switching: Switching in which many processor-controlled switching units are distributed, usually close to concentrations of users, and operated in conjunction with a host switch. , the traffic, between such concentrations and the host switch. en.wikipedia.org /wiki/Distributed_switching   (82 words)

Packet switching Packet switching is used to optimise the use of the bandwidth available in a network and to minimise the latency. Packet switching was invented by Donald Davies and Paul Baran in the early 1960s. In computer network ing and telecommunications, packet switching is a communications paradigm in which packet s (messages or fragments of messages) are individually routed between node s, with no previously established communication path. www.serebella.com /encyclopedia/article-Packet_switching.html   (579 words)

Packet switching The knockout switch is a fully connected architecture which attempts to combine the implementation simplicity of input queuing (buffer complexity is linear in the number of ports) with the throughput performance of output queuing (permitted input load and saturation throughput both approaching 100%). Packet switching main difference from Circuit Switching is that that the communication lines are not dedicated to passing messages from the source to the destination. The inputs to the switch are the inputs to the elements in the first column, and the outputs of the last column are the outputs from the switch. www2.rad.com /networks/2004/PacketSwitching/main.htm   (3713 words)

Packet Switching Packet switching is similar to message switching using short messages. There are two important benefits from packet switching. The equipment examines the packet header information (PCI) and then either removes the header (in an end system) or forwards the packet to another system. www.erg.abdn.ac.uk /users/gorry/course/intro-pages/ps.html   (407 words)

Switching Adaptive switching Adaptive switching mode is a user-defined facility to maximize the efficiency of the switch. Message switching In packet switching, where messages were routed in their entirety, one hop at a time. Packet switching In telecommunications, packet switching is a communications paradigm in which packets (messages or frag... www.brainyencyclopedia.com /topics/switching.html   (407 words)

+5V Switching regulator (1) In case of the switching regulator, it inputs only the electric power which is necessary to output from the input by the switching operation. The switching regulator which introduces in this page is the step down type and is the one to get the output voltage which is lower than the input voltage. The switching regulator of the step up type can be made the voltage which is higher than the input voltage. www.interq.or.jp /japan/se-inoue/e_ckt22.htm   (177 words)

Switching regulator - Patent 4240134 A switching regulator according to claim 8, in which said D-type flip-flop has a T-terminal connected to the output of said clock pulse oscillator, a D-terminal connected to the output of said comparing means and a pair of Q and Q output terminals connected to said gate circuit means, respectively. A switching regulator according to claim 4, which further comprises an error voltage amplifier having a pair of inputs connected to the output of said rectifying means and a reference DC voltage source and an output connected to the first input terminal of said amplitude comparator. The pulse width of the switching signal, which is the output signal from the pulse width modulator 12, is varied in response to the DC voltage obtained at the output terminal 9 to stabilize the DC voltage as a desired constant value. www.freepatentsonline.com /4240134.html   (3579 words)

LEOT Laser Tutorial - Course 3: Laser Technology - Module 12: Laser Q-Switching - Giant Pulses Equation 3 is a mathematical expression for gain in the active medium for a laser. This high gain results in a very quick buildup of the light signal in the cavity producing strong stimulated emission and using most of the energy stored in the active medium to produce a single short-duration, high-peak-power pulse. State the Q-switch types that cannot be used with the following lasers and explain why in each case: repairfaq.ece.drexel.edu /sam/CORD/leot/course03_mod12/mod03-12.html   (4980 words)

Burst switching - Wikipedia, the free encyclopedia In concept, burst switching is similar to connectionless mode transmission, but differs in that burst switching implies an intent to establish the switch connection in near real time so that only minimum buffering is required at the node switch. In a packet switched network, burst switching is a capability in which each network switch extracts routing instructions from an incoming packet header to establish and maintain the appropriate switch connection for the duration of the packet, following which the connection is automatically released. This page was last modified 08:52, 19 September 2004. en.wikipedia.org /wiki/Burst_switching   (109 words)

Laser Oscillators Hence "Q-switching" to turn the laser on and off and help achieve mode locking. The Q of a resonant circuit is the resonant frequency divided by the bandwidth of the resonance, and is a measure of the sharpness of the resonance. When laser action occurs, the Q is very high because you get optical amplification only for an extremely narrow range of frequencies by multiple passes between the mirrors of the laser system. hyperphysics.phy-astr.gsu.edu /hbase/optmod/lasosc.html   (874 words)

Packet switching - Wikipedia, the free encyclopedia Packet switching is also called connectionless networking, because it is the opposite of circuit switched or connection-oriented networking, although technologies such as MPLS are beginning to blur the boundaries between the two. Packet switching influenced the development of the Actor model of concurrent computation in which messages sent to the same address may be delivered in an order different from the order in which they were sent. Packet switching is used to optimize the use of the bandwidth available in a network, to minimize the transmission latency (i.e. en.wikipedia.org /wiki/Packet_switching   (1420 words)

Square wave - Wikipedia, the free encyclopedia Square waves are universally encountered in digital switching circuits and are naturally generated by binary (two-level) logic devices. To avoid this problem in very sensitive circuits such as precision analogue to digital converters, sine waves are used instead of square waves as timing references. However, as the frequency-domain graph above shows, square waves contain a wide range of harmonics; these can generate electromagnetic radiation or pulses of current that interfere with other nearby circuits, causing noise or errors. en.wikipedia.org /wiki/Square_wave   (1420 words)

A Wizard's Electronics Companion A well-designed analog circuit may have an efficiency of 5%, but an equally well-designed switching circuit which might accomplish the same task can achieve better than 99%. When transistor became viable, some switching was tried, but switching circuits are far more complex than their analog counterparts, not the least because rates of change of current (the energy conversion between potential and energy of motion) are critical and very high in a switching circuit, as are rates of change of voltage. Another useful way we can visualize an inductor's operation in a switching circuit is imagine the inductance tends to average the waveform, and if the inductance is high enough, to block the incoming switching waveform leaving an average DC voltage. home.earthlink.net /~doncox/wec/Switching.html   (1420 words)

Switching network for switching channels - Patent 5311506 Thus, in the known switching network, because of the distribution of the channels of one frame to all outputs of the switching network, it is necessary for the data to be intermediately stored in as many memory elements as the switching network has data outputs. To use the switch group according to the invention for switching channels, it is therefore necessary to select the arrangement of the virtual containers in the STM-1 frame, so that the pointer of each virtual container VC starts on the first line of the STM-1 frame. Loading the useful area with VC-11 containers means that 84 channels can be transmitted in the useful area, which are distributed to three equidistant time slots. www.freepatentsonline.com /5311506.html   (3351 words)

Method and apparatus for transmitting digital information signals from signal transmitters to signal receivers over switching apparatus - Patent 4061879 The switching matrix arrays in the switching centers to be employed for the retransmission of the information signals (and, where necessary, of addresses) and activated sequentially in accordance with the addresses, are actuated only for the duration of a signal transmission. In said switching apparatus a connection is established by the address signal between the input of the switching apparatus carrying the address signal and the information signals and the output of the switching equipment connected to the desired signal receiver, only for the duration of the transmission of the information signals. The switching matrix arrays in the switching centers suitable for the retransmission of the signals are initiated only for the period during which the signals concerned are being transmitted. www.freepatentsonline.com /4061879.html   (11478 words)

Definition: switching center switching center: In communications systems, a facility in which switches are used to interconnect communications circuits on a circuit-, message-, or packet-switching basis. Synonyms, in telephony, central office, switching exchange, switching facility. www.atis.org /tg2k/_switching_center.html   (49 words)

cell switching This is an efficient compromise between telephone switching and packet routing. B) A multi-stage switching matrix allows all connections to proceed simultaneously. A cell is a fixed length packet with 5 header bytes and 48 data bytes, laid out roughly as: home.comcast.net /~mgliwa3/atonltdmall/cellswitching.html   (49 words)

packet switching - Hutchinson encyclopedia article about packet switching The resilience of packet switched networks was important to the US Department of Defense, who funded early packet switching research. Packet switched networks make more effective use of bandwidth than circuit switched networks, and are more resilient to breaks in network links because there are always multiple routes from source to destination. Packet switched networks do not provide a dedicated connection between two locations, as with a circuit switched network. encyclopedia.farlex.com /packet+switching   (225 words)

Packet Switching The switching equivalent of the internal IMP (or router) is the switch. The key component of the switch is the switching fabric, which is the point where data is transferred from one port of the switch to another. Packet switching is far more robust (since that is what it was originally designed for) and is better suited for transmitting binary data than circuit switched systems. services.eng.uts.edu.au /~kumbes/ra/Switching/Packet-Switching/packet.html   (7549 words)

Try your search on: Qwika (all wikis)

About us   |   Why use us?   |   Reviews   |   Press   |   Contact us   Copyright © 2005-2007 www.factbites.com Usage implies agreement with terms.