Ppt on point contact diodes

G.Villani jan. 071 CALICE pixel Deep P-Well results Nwell ≈ 900 μm 2 P-well 1μm ring gap Collecting diodes 3.6 x 3.6 μm 2 Bias: NWell 3.5V Diodes: 1.5V.

CALICE pixel Deep P-Well results Nwell ≈ 900 μm 2 P-well 1μm ring gap Collecting diodes 3.6 x 3.6 μm 2 Bias: NWell 3.5V Diodes: 1.5V 50 μm x 50 μm pixel size P-well contact ground Hit points G.Villani jan. 072 CALICE pixel Deep P-Well results Nwell 3.6 x 3.6 μm 2/.6 x 3.6 μm 2 1 μm clearance from the guard ring Bias: NWell 3.5V Diodes: 1.5V 50 μm x 50 μm pixel size P-well contact ground Hit point P-well 5μm guard ring G.Villani jan. 073 CALICE pixel Deep P-Well results ≈ 144 mV ≈ 202 mV ≈ 9.5 μm V μmμm μmμm/


Measurement and data extraction. How to measure the splice and diode interconnections. Accuracy and issues of these measurements. Data extraction issues.

Resistance (plus diode leads Board B) Bus Bar Splice Defect How to measure the splice and diode interconnections. 1 kA 6 kA 10/7/20116CSCM Workshop ∆t How to measure the splice and diode interconnections. 1 kA ~60-100s, 5Hz => 300-500 points - U0 / 13  : specification during reception in SM18 10/7/201119CSCM Workshop Diode lead ‘resistances’ for B15R5 Anode Conclusion: Inductive signal is small. Results indicate the presence of one or more irregular contacts. The three 6 kA curves differ a factor 2. 10/7//


1.1 Introduction 1.2 Diode characteristics 1.3 Reverse Recovery characteristics 1.4 Power Diode Types- I)General Purpose ii)Fast Recovery Diode iii)Schottky.

less than 1 A to hundreds of amperes.  The charge strong problem of a Pn junction can be laminated in a schottky diode. It is accomplished by setting up a barrier with a contact between a metal and a semiconductor. A layer of metal is deposited on a thin epitaxial layer of n type silicon. The /with the increase in the voltage between gate and  breakdown voltage this is the voltage at which the avalanche breakdown take place.at this point the voltage across the devices and current through it both are high


Diodes II: Fabrication by Doping MS&E 362: Materials Lab III Nov. 8.

: –Limited in concentration to solid solubility of dopant in the host melt at temperature. –Reduce crystal quality of the host – creates point defects. –Creates only uniformly doped material. P. M. Voyles, U. Wisconsin, Madison, 11/8/11 11 Doping by Implantation: /Diffusion dope with In from one side. Sputter gold thin film on the back to make an Ohmic contact. Schematic of the final configuration of our homegrown diodes. P. M. Voyles, U. Wisconsin, Madison, 11/8/11 20 Why Ge? Most microelectronic devices/


Small signal modulatioin

of output of structue output of structue focusing beam to a focusing beam to an single point. array of spots. C. G. Fonstad, 4/03 Lecture 22 - Slide 11 Laser diodes: VCSELs, cont. VCSEL Structure: An example of a long-wavelength (1.55 μm/ G. Fonstad, 4/03 Lecture 22 - Slide 12 Laser diodes: VCSELs, cont. VCSEL Structure: An example of aVCSEL with a deposited dielectric stack upper mirror, and an undoped GaAs/AlGaAs lower DBR. Note that both contacts are made very near the active layer and no current flows /


Global PIN Diodes Market Research Report and Forecast to 2016-2020 Phone No.: +1 (214) 884-6817 id:

in its presentation and style.Global PIN Diodes Market Request a sample of this report @ http://www.orbisresearch.com/contacts/request- sample/99641.http://www.orbisresearch.com/contacts/request- sample/99641 Finally, like every report/Diodes Market’, also ends with a SWOT analysis, and analyses on investment feasibility and returns, not to mention development trends and forecasts. Phone No.: +1 (214) 884-6817 Email id: sales@orbisresearch.com About Us: Orbis Research (orbisresearch.com) is a single point/


Global Schottky Barrier Diode Market Research Report and Forecast to 2016-2020 Phone No.: +1 (214) 884-6817 id:

its presentation and style.Global Schottky Barrier Diode Market Request a sample of this report @ http://www.orbisresearch.com/contacts/request- sample/99642.http://www.orbisresearch.com/contacts/request- sample/99642 Finally, like every /Diode Market’, also ends with a SWOT analysis, and analyses on investment feasibility and returns, not to mention development trends and forecasts. Phone No.: +1 (214) 884-6817 Email id: sales@orbisresearch.com About Us: Orbis Research (orbisresearch.com) is a single point/


Thin Contact Development for

for ions, two for electrons per spacecraft) 104 detectors delivered, 80 used in flight THEMIS PIN Diode Fabricated in the MSL http://www.nasa.gov/mission_pages/themis/spacecraft/SST.html MSL detectors on NASA / Fabrication technologies developed include: amorphous semiconductor contact, implanted contact, and surface passivation Invented shaped-field point-contact Ge detector (1989) Invented coplanar-grid technique for CdZnTe-based detectors (1994) Summary Thin contacts are needed for imaging soft x-rays/


DIODES Applications EE314.

electroluminescence from a point contact on a crystal of SiC recreates H. J. Rounds original experiment from 1907. Light Spectrum Light Spectrum Red, green and blue LEDs LED - Light Emitting Diodes When a light-emitting diode is forward biased/www.three-fives.com/latest_features/feature_articles/250205medical.html pn-junction laser Light Amplification by Stimulated Emission of Radiation Diode Lasers are Small! http://faculty.uml.edu/carmiento/Special%20Lectures/Intro%20to%20EE%20Lecture.pdf Radar/Laser /


Oclaro DSDBR Comments on the Oclaro Documents: DSDBR Training;L5000VCJ Datasheet C-band and InP/InGaAs technology: the laser diode vertical structure The.

Overall Tuning The total chip structure Reliability issues for the chip Points to be clarified The Locker M.Vanzi January 2012 C-band and InP/InGaAs technology: the laser diode vertical structure The C-band ranges from 191 to 196 THz,/, depleting some reflected wavelengths and enhancing others. A broad peak forms, able to select a single supermode 8 metal contacts, operated in pairs rear Bragg reflector front reflector tuned front reflector Continuous tuning Supermode selection Overall Tuning I SO A/


Global Light Emitting Diode (LED) Chipsets Consumption Market 2016 Industry Trend and Forecast 2021 Phone No.: +1 (214) 884-6817 id:

Diode (LED) Chipsets Consumption Market’, also ends with a SWOT analysis, and analyses on investment feasibility and returns, not to mention development trends and forecasts. Phone No.: +1 (214) 884-6817 Email id: sales@orbisresearch.com About Us: Orbis Research (orbisresearch.com) is a single point/helps our clients to map their needs and we produce the perfect required market research study for our clients. Contact Information: 4144N Central Expressway, Suite 600, Dallas, Texas - 75204, U.S.A. Phone No.: +/


Device Fabrication Example

Device Fabrication Example Group:- 2 pn junction Diode Fabrication Start:- The starting point is a flat, damage-free , single- crystal, Si wafer. Common dopants are boron for P-type layers and/patterning step P-Diffusion Similar set of steps form p+ diffusion regions for pMOS source and drain and substrate contact Contacts Cover chip with thick field oxide Etch oxide where contact cuts are needed Metallization Sputter on aluminum over whole wafer Remove excess metal leaving wires Detailed Mask Views Six /


Global Organic Light Emitting Diodes (OLED) Market Report: 2016 Edition Phone No.: +1 (214) 884-6817 id:

panels. OLED, otherwise known as organic light emitting diode, is a type of light emitting diode (LED) that utilizes an emissive electroluminescent layer comprised / sales@orbisresearch.com About Us: Orbis Research (orbisresearch.com) is a single point aid for all your market research requirements. We have vast database of reports /map their needs and we produce the perfect required market research study for our clients. Contact Information: 4144N Central Expressway, Suite 600, Dallas, Texas - 75204, U.S.A/


2017 Market Research Report on Global Blue Laser Diode Industry Phone No.: +1 (214) id:

Blue Laser Diode in these regions, from 2011 to 2021 (forecast), like North America, Europe, China, Japan, Korea, Taiwan. Phone No.: +1 (214) 884-6817 Email id: sales@orbisresearch.com About Us: Orbis Research (orbisresearch.com) is a single point aid for /of their specialisation. This helps our clients to map their needs and we produce the perfect required market research study for our clients. Contact Information: 4144N Central Expressway, Suite 600, Dallas, Texas - 75204, U.S.A. Phone No.: +1 (214) 884-/


G.Villani jan. 071 CALICE pixel Deep P-Well results Nwell 16 μm x 16 μm P-well 17 μm x 17 μm Collecting diodes 3.6 μm x 3.6 μm Bias: NWell 3.5V Diodes:

Well results Nwell 16 μm x 16 μm P-well 17 μm x 17 μm Collecting diodes 3.6 μm x 3.6 μm Bias: NWell 3.5V Diodes: 1.5V 50 μm x 50 μm pixel size P-well contact ground Hit points G.Villani jan. 072 CALICE pixel Deep P-Well results ≈ 144 mV ≈ 202 mV ≈ /9.5 μm Epitaxial layer potential well V V/cm μmμm μmμm Diode F(z) top G.Villani jan. 073 278 e - Diodes / 9e - NW/ 93 ns CALICE pixel /


Lecture #16 OUTLINE Diode analysis and applications continued

additional component of current flowing in the diode: where Ioptical is proportional to the intensity of the light Photovoltaic (Solar) Cell ID (A) in the dark VD (V) with incident light operating point Photodiode An intrinsic region is placed between/ a voltage to an overlying “gate” electrode), to modulate the conductance of the semiconductor Modulate drift current flowing between 2 contacts (“source” and “drain”) by varying the voltage on the “gate” electrode Metal-oxide-semiconductor (MOS) FET: MOSFET /


Semiconductor and the Integrated Circuits. In 1874, Braun discovered the asymmetric nature of electrical conduction between metal contacts and semiconductors,

precursor to the radar screen and the television tube. History In 1906, Pickard took out a patent for a point contact detector using silicon. In 1907, Pierce published rectification characteristics of diodes made by sputtering metals onto a variety of semiconductors. By 1935, selenium rectifiers and silicon point contact diodes were available for use as radio detectors. With the development of radar, the need for detector/


P – n junction Prof.Dr.Beşire GÖNÜL.  the basic element of all bipolar devices. >photodiode, light sensitive diode, >LED- ligth emitting diode, >laser.

- ligth emitting diode, >laser diode-variable capacitance diode p – n junction  The p-n junction can be formed by  p-type silicon into close contact  with a piecce of n-type silicon. But forming a p-n junction is not so simply. Because; 1) very few points of contact 2) exposed to the air – always has a thin oxide coating. 3)Bonding arrangement is interrupted at/


Temperature and Light Sensors

Sensors Thermocouple Thermistor Resistance-Temperature Devices (RTDs) Solid State (PN Junction Diode) Thermometry Fiber Optic GaAs Bandgap Temperature Sensor Blackbody Radiation and IR Non-contact Thermometry (Pyrometer) Thermopile Radiation Detector Optical Instruments: Spectrophotometers Snell’s Law/. Pt is the most popular, but also the most costly, because of its high resistivity, relatively high melting point, and because it is a “noble metal” (it is not willing to combine with other elements easily, so/


Light Emitting Diodes NanoLab 2003. Outline Motivation/Applications: Why LED’s? Background Fabrication Testing Conclusions.

(orange,red) have efficiency of ~100 lumens/watt – Generate little heat Reduced A/C costs Applications Communication (fiber optics) Blue Laser Diodes –Video Recording –Data Storage –Televisions –Video Games –High Density DVD’s –DVD-ROM drive Extra Motivation: –First company to produce efficient/2  m of diffusion Making the Samples We use a black wax (softening point at T~140 o C) and 1% Bromine in Methanol etch to make contacts Test LED’s using curve tracer Check to see that device actually works Find turn/


Improvement of Characteristic Temperature for AlGaInP Laser Diodes Presenter: Hsiu-Fen Chen ( 陳秀芬 ) Authors: Man-Fang Huang ( 黃滿芳 ), Meng-Lun Tsai ( 蔡孟倫.

of DVD LD Refer to the web site: http://sharp-world.com/products/device/lineup/opto/laser-diode  AlGaInP LD with high operation temperature for outdoor application is still under development. ApplicationDVD-ROM// choice for high operation temperature application 21Paper 5628-21 Experimental Characteristic Temperature  There is a crossover point between 4QW and 5QW  A characteristic temperature of as high as 110 K is obtained for/ For questions, please contact Prof. Man-Fang Huang at mfhuang@cc.ncue.edu.tw


G.Villani march 071 CALICE pixel Deep P-Well results Nwells P-well 3μm guard ring Diodes [3.6,1.8,0.9] x[3.6,1.8,0.9]μm 2 Bias: NWell 1.8/1V Diodes: 1.5V.

.6,1.8,0.9] x[3.6,1.8,0.9]μm 2 Bias: NWell 1.8/1V Diodes: 1.5V 50 μm x 50 μm pixel size P-well contact ground Hit points : from BR corner (1) to BR diode (10) 10 1 G.Villani march 072 CALICE pixel Deep P-Well results Charge collected 3.6µm Charge collected 1.8/


Distance Measurement Sensors Market: By Sensing Technology (Laser Diodes, IR LEDs, Ultrasonic, Capacitive, Others) By Measurement Type; By Application.

(Laser Diodes, IR LEDs, Ultrasonic, Capacitive, Others) By Measurement Type; By Application (Industrial Automation, Safety Systems, Consumer Electronics, Packaging, Robotics) Forecast 2015 - 2020 Published Date: 10 November, 2014 Number of Pages: 177 Contact: Sanjay /Matthews sales@industryarc.com #: +1-614-588-8538 (Ext: 101)  The Distance Measurement Sensors Market deals with the sensors market which are highly equipped for measuring the distance between two points.Distance /


Signal Processing Electronics

B.Satyanarayana Tata Institute of Fundamental Research, Mumbai Contact: bsn@tifr.res.in B.Satyanarayana, TIFR, /cylindrical detectors (from inside out: ITS Pixels (ITS Drift, ITS Strips, TPC, TRD) measures at many points (over 100 just the TPC ) the passage of each particle carrying an electric charge, so /end up with new time constants in the system or prevent system from working at all, eg diode with low R load B.Satyanarayana, TIFR, Mumbai Signal Processing Electronics SERCEHEP11, VECC, Kolkata Coaxial /


Technology: 2029 By Jonathan Blieschke. What’s Happening Now? OLED (Organic Light Emitting Diode) Multi- Touch Screens Cloud Computing 10GUI Mind-Readers.

Touch Screens Cloud Computing 10GUI Mind-Readers Portable Devices for Constant Connectivity OLED Organic Light Emitting Diode When turned off, OLED displays are completely transparent. When active, they show an ultra-high/-touch displays, the traditional mouse and window system became unnecessarily clumsy and disorganised. 10GUI allows for the use of 10 different points of contact for a fully interactive experience, with their con10uum window layout. 10GUI Video If the movie does not play after 10 seconds,/


Texas Retail Market Testing Flight 0312– V4.0. Agenda I. Acronyms II. Points of Contact III. Supporting Documents IV. TX SET V4.0 High Level Changes V.

– Scheduled Meter Read Date Texas SET – Texas Standard Electronic Transaction TMTP – Texas Market Test Plan TW – Testing Worksheet Points of Contact Gene Cervenka: gcervenka@ercot.com; (512) 248-3903gcervenka@ercot.com Kathryn Thurman: kthurman@ercot.com; (512) 248-6747kthurman@/ ability to communicate additional information to the TDSP. Only 1 segment allowed per transaction. Add the LE “Light Emitting Diode” code to the REF~PRT segment in the 814_04, 814_05, 814_14, 814_20, 814_22, 867_02, and 867_03. Add/


GLAUCOMA MANAGEMENT The Role for S.L.T.. Points to consider SLT works in 80% of eyes treated Average IOP reduction is 25% (around 5mmHg) Average duration.

previously untreated 90-degree quadrant) lowers IOP by approximately 22% Still More Points to consider The majority of US ophthalmologists are NOT using laser as 1/ erratic schedules Patients who travel a lot Time zone changes Luggage limitations Contact Lens wearers “Sensitive Ocular Surface” Dry Eye Allergies Ocular Rosacea Major /- pigmented cells and/or collagen Laser Trabeculoplasties; SPOT SIZES ARGON procedures:50 microns DIODE procedures:60 microns S.L.T. procedures :400 microns How is it working/


INDUSTRIAL SENSORS SICK, Inc. Photoelectric Sensor Training System Requirements èPointing Device èWindows 95/98/NT èSound Card èSpeakers or headphones.

, Inc. Photoelectric Sensor Training System Requirements èPointing Device èWindows 95/98/NT èSound Card èSpeakers or headphones èPowerPoint Viewer INDUSTRIAL SENSORS Contact List INDUSTRIAL SENSORS Agenda èBasic Photoelectric Optical / INDUSTRIAL SENSORS Light Sources èIncandescent Lights- Light Bulbs èBroadband, White Light, IR Light èLED’s- Light Emitting Diodes èMonochromatic Light, Visible, IR, UV èLASER’s- Light Amplification from Stimulated Emission Radiation èMonochromatic, Coherent, Visible,/


1 Technician Licensing Class These Power Point presentations are available to individuals who register with The W5YI Group’s HamInstructor.com program.

the registered instructor under which the instructor agrees not to copy or distribute the Power Point presentations to unauthorized users. 2 Technician Licensing Class Multi-Mode Radio Excitement Valid July 1/two radio signals. A simple diode can act as a mixer, but most modern day radios use a much more elegant arrangement using several diodes or active devices such as / Which type of voice mode is most often used for long-distance (weak signal) contacts on the VHF and UHF bands ? A.FM B.DRM C.SSB D.PM /


How to solder Soldering is defined as "the joining of metals by a fusion of alloys which have relatively low melting points". In other words, you use a.

fusion of alloys which have relatively low melting points". In other words, you use a metal that has a low melting point to adhere the surfaces to be soldered together./ of solder you applied to the tip before heating the joint will help make contact between the board and the lead. It normally takes a second or two to/and a meter to check resistance. Solder small parts first. Solder resistors, jumper leads, diodes and any other small parts before you solder larger parts like capacitors and transistors. This /


Atomic Force Microscopy. ~ Introduction ~ Principle ~ How it works? ~ AFM Resolution ~ Vibration Isolation ~ Piezoelectric scanners ~ AFM Modes *Contact.

nm) attached to a cantilever is used in the AFM to scan an object point by point and contouring it while a constant small force is applied to the stylus. With /in which the tip is attached to the underside of a reflective cantilever. A diode laser is focused onto the back of a reflective cantilever. As the tip scans /cantilevers can be modulated sideways as well as up and down (as with dynamic contact and non-contact modes) to measure sidewalls, at the cost of more expensive cantilevers and additional /


Power Point for Optoelectronics and Photonics: Principles and Practices Second Edition ISBN-10: 0133081753 Second Edition Version 1.029 [20 March 2014]

Optoelectronics and Photonics: Principles and Practices, Second Edition, © 2013 Pearson Education, USA Chapter 3 Semiconductor Science and Light-Emitting Diodes (a) Energy levels in a Li atom are discrete. (b) The energy levels corresponding to outer shells of isolated Li/- and n- sides of the pn junction before the contact. (b) The pn junction after contact, in equilibrium and in open circuit. (c) Carrier concentrations along the whole device, through the pn junction. At all points, n po p po = n no p no =/


VR graphics.ssu.ac. kr 1 Ultrasonic Trackers Definition: A non-contact position measurement device that uses an ultrasonic signal produced by a stationary.

Logitech) Input Devices VR graphics.ssu.ac. kr 5 Optical Trackers Definition: A non-contact position measurement device that uses optical sensing to determine the real-time position/orientation of/HiBall 3000 tracker HiBall 3000 tracker on an HMD on an HMD Lateral effect photo diodes VR graphics.ssu.ac. kr 9 Types of VR Applications Types of VR Applications/ sensors (two per finger) and a 10-bit A/D converter (1,024 points); Can do 70 hand configuration reads/sec.; Communicates with the host over an RS232/


PowerPoint Instructions To advance to the next slide, bullet point or image, simply click the left mouse button. Ensure the arrow is not on an icon. If.

rays None of this was detected using a probe and X-rays DIAGNOdent 45 38 KaVo DIAGNOdent laser ä 655 nm diode laser ä Reads 2mm into the tooth ä Detects fluorescence in ANYTHING you aim it at High sensitivity Low specificity It /sound lingual enamel lead to demineralization of the underlying dentin Rapid onset caries 13 yr old patient. Rapid onset contact point caries. Rapid mineral loss of intraprismatic enamel and associated cavitation Rapid onset caries Caries Detection Dye accurately stains demineralized/


 Salient characteristics / Approvals  Non-illuminated Switches  Illuminated Switches  Pilot Lights  Contact Elements Control & Signalling Devices.

Switches Types of Actuators  Flush  Projecting  Projecting Push Push  Selector 2 pos. or 3 pos. maintained contact 2 pos. or 3 pos. spring return  Twin illuminated  Mushroom  40 push - pull Types of Lamp/380V  With resistor suitable for 24V, 48V, 110V and 230V AC/DC  With resistor and diode suitable for 240V AC  Bulb BA9S, 2 - 2.6 watts LED Lamp Holders Advantages of/Holders for Pilot Lights Voltages Applicable Incoming voltage Voltage output at bulb point 230 V 110 V 06 V 12 V 24 V 06 V 12 V 24 /


 Salient characteristics / Approvals  Non-illuminated Switches  Illuminated Switches  Pilot Lights  Contact Elements Control & Signalling Devices.

lluminated Switches Types of Actuators  Flush  Projecting  Selector 2 pos. or 3 pos. maintained contact 2 pos. or 3 pos. spring return  Twin illuminated Types of Lamp Holders for above Illuminated / With resistor suitable for 24V, 48V, 110V and 230V AC/DC  With resistor and diode suitable for 240V AC  Bulb BA9S, 2 - 2.6 watts LED Lamp Holders Advantages /colours available Lamp Holders for Pilot Lights Voltages Applicable Incoming voltageVoltage output at bulb point 230 V 110 V 06 V 12 V 24 V 06 V 12 V/


Brussels, 07 October 2015 H2020-ICT/FET National Contact Points Training on H2020 Workprogramme 2016-17 Photonics support to manufacturing in H2020 (2016)

Brussels, 07 October 2015 H2020-ICT/FET National Contact Points Training on H2020 Workprogramme 2016-17 Photonics support to manufacturing in H2020 (2016) Factories/Examples of projects in FP7: Project AcronymProject Title APPOLOHub of Application Laboratories for Equipment Assessment in Laser Based Manufacturing BRIDLEBRilliant Industrial Diode LasEr HALOHigh power Adaptable Laser beams for materials prOcessing IMPROVInnovative Mid-infrared high Power source for resonant ablation of Organic based /


WIRELESS POWER TRANSMISSION (WPT) 000728rmd Microwave Beam Laser Beam Redirected, Reprocessed Sunlight Sunbeam Point of Contact: Richard M. Dickinson,

WIRELESS POWER TRANSMISSION (WPT) 000728rmd Microwave Beam Laser Beam Redirected, Reprocessed Sunlight Sunbeam Point of Contact: Richard M. Dickinson, Chairman NASA SSP Wireless Power Transmission Working Group (818) 354-/pp. 18 & pp. 119, (Adapted from Reilly), Artech House, 1992. *** Wunsch, D. and Bell, R.,”Determination of Threshold Failure Levels of Semiconductor Diodes and Transistors Due to Pulse Voltages,” IEEE Trans. Nuclear Science, Vol. NS-15, pp. 244-259, Dec. 1968. ****Guy, A. et. al.,”/


Common causes of voltage drop are: too small of wire, broken wire, broken wire strands, dirty connections and defective contact switches or controls.

(convert) AC current to DC current. This principle allows the Alternator to be used on modern vehicles to generate current. Without diodes the alternator would produce unusable current to run the electrical system. Magnetic material (ferrous), such as iron, nickel, steel has the/ground lead and the probe tip. It the probe tip contacts a 12 volt source the light bulb will illuminate. This is a short piece of wire used as a temporary connection between two points in a circuit. It may have alligator clips or /


The Computer z a computer system is made up of various elements z each of these elements affects the interaction y input devices - text entry and pointing.

mouse turns as mouse is moved Rotates orthogonal potentiometers Can be used on almost any flat surface Optical light emitting diode on underside of mouse sits on special gridlike pad on desk; less susceptible to dust and dirt detects fluctuating / busy desk, tiring on the arm. Both much less popular than the mouse Digesting tablet Indirect device. Resistive tablet detects point contact between 2 separated sheets: has advantages in that it can be operated without specialised stylus - a pen or the user’/


1 802.11 - Architecture of an infrastructure network Distribution System Portal 802.x LAN Access Point 802.11 LAN BSS 2 802.11 LAN BSS 1 Access Point STA.

STA) terminal with access mechanisms to the wireless medium and radio contact to the access point  Basic Service Set (BSS) group of stations using the same radio frequency  Access Point (AP) station integrated into the wireless LAN and the distribution /11 PHY LLC infrastructure network LLC 4 Comparison: infrared vs. radio transmission  Infrared uses IR (Infra-Red) diodes, diffuse light, multiple reflections (walls, furniture etc.) Advantages simple, cheap, available in many mobile devices no licenses/


1 802.11 - Architecture of an infrastructure network Distribution System Portal 802.x LAN Access Point 802.11 LAN BSS 2 802.11 LAN BSS 1 Access Point STA.

STA) terminal with access mechanisms to the wireless medium and radio contact to the access point  Basic Service Set (BSS) group of stations using the same radio frequency  Access Point (AP) station integrated into the wireless LAN and the distribution /802.11 PHY LLC infrastructure network LLC 4 Comparison: infrared vs. radio transmission Infrared – uses IR (Infra-Red) diodes, diffuse light, multiple reflections (walls, furniture etc.) – Advantages simple, cheap, available in many mobile devices no /


1 Outline Basic Idea Simple Theory Design Points Calibration of Forces Selected Biological Applications.

refraction For Rayleigh scatterers with d<< trapping still occurs but wave optics is needed. Point dipoles and a diffraction-limited focal waist can be used For intermediate sized particles d / 1 W typical power Ti:Sapphire tunable in 700 - 1100 nm with 1 W typical power Diode laser in 780 - 1330 nm (850 nm typical) with 100 mW of power typical 15 / Lower cell is trapped and brought near upper cell 1 2 34 Cells are now in contact 10 uv pulses of laser light at the membrane junction = “laser scissors” Lead to/


Optical Access A customer’s point of view Dr. Ing. Joseph C. Attard.

features Resemble handheld computers Windows Mobile Pocket Outlook with unified Inbox Contact + Calendar+ Tasks Pocket Internet Explorer MSN Messanger Windows Media Player/namely that the copper plant is not touched is lost. At this point one starts to consider VDSL or FTTH. » Both VDSL and FTTH/Wavelength converters Optical cross connects –Liquid crystal switches –Guided wave switches –Laser diode switches –MEMS switches –Bubble switches (Agilent) Dispersion Compensation Chromatic dispersion effects /


PORE FORMING PROCESS IN ANODICALLY OXIDIZED SILICON WAFERS Basics of electrochemical cell - p + - Si wafer anode in contact with aqueous HF electrolyte.

cell - p + - Si wafer anode in contact with aqueous HF electrolyte Mechanism of natural self-limiting/ KEY ISSUES: ORIGIN OF PHOTO- AND ELECTROLUMINESCENE OF POROUS SILICON Origin of luminescence key point- as bulk Si is indirect band gap semiconductor with very weak light emission Models for/ quantum cascade laser, distributed feedback laser, resonant tunneling transistor, high mobility ballistic transistor, laser diode BAND GAP ENGINEERING OF SEMICONDUCTORS The MOCVD, LPE, CVD, CVT, MBE are all deposition /


Radio & Telecommunications Systems 1 Radio & Telecommunications Systems (1.0) Lecturer: P.M. Cheung (room 326) Contact Hours:

) Lecturer: P.M. Cheung (room 326) email:pmcheung@vtc.edu.hk Contact Hours: Lecture: 30 hours (room 310) Tutorial: 15 hours (room324) /transmitters and receivers block diagrams of : AM transmitters, FM transmitters, superheterodyne receiver diode detector Radio & Telecommunications Systems 6 Telephone systems fixed network technology, space and time/ that can be used to establish communication using the sky wave between two points determined by both the angle of incidence of the radio wave and the critical/


CONDUCTION, INSULATION AND PROTECTION. CONDUCTION Energy (eg. Electrical) transfer from one material to another by direct contact. Conductors are materials.

CONDUCTION, INSULATION AND PROTECTION CONDUCTION Energy (eg. Electrical) transfer from one material to another by direct contact. Conductors are materials that allow transfer to happen. Examples of good conductors are copper, aluminum, silver and/. Filaments can be found in many different fuses, light bulbs, diodes and many other electrical elements. If the current intensity is to high the filament will either melt, or break into two pieces. At this point the fuse will need to be replaced. Breaker It is a /


The world of ExNoRa ExNoRa Power in Power Point ExNoRa stands for EXcellent, NOvel & RAdical. One is expected to ensure adapting these three qualities.

Contamination of mercury Causes - Contamination of mercury LED LED Light Emitting Diode Consumes Less Energy Consumes Less Energy Life span of 100,000 hours / urgently reduce the burning of fossil fuels. How to arrest Global Warming? The 5 point ACTION. Use ExNoRa’s Magic Pocket Log Book, and follow 5 easy actions to/ WARMING LET US FIGHT GLOBAL WARMING JOIN HANDS & WORK TOGETHER Make the world BETTER. Contact 098400 34900 044 24757070 & 43556585 exnoran @gmail.com The most informative & exciting websites to/


INTRODUCING OHM’S LAW Original Power Point Created by Paul Lane Modified by Georgia Agricultural Education Curriculum Office June 2002.

INTRODUCING OHM’S LAW Original Power Point Created by Paul Lane Modified by Georgia Agricultural Education Curriculum Office June 2002 WHERE DID OHM’S LAW COME FROM? Georg Simon Ohm BORN:/Law we must first learn some simple electrical symbols: SINGLE CELL FUSE SINGLE ACTION SWITCH CAPACITOR BULB RESISTOR ELECTRICAL SYMBOLS ONE WAY DIODE VARIABLE RESISTOR EARTH WIRES CROSSING WIRES JOINING IGNITION COIL CONTACT POINT WHAT IS OHM’S LAW? V= I x R Where:V=Voltage I=Current R=Resistance EXAMPLE: A 12 volt battery/


Output devices. There is no point in having a computer that can do wonderful things unless it can tell you the results of what it has been doing. This.

Output devices There is no point in having a computer that can do /cars. They are seldom manufactured to resemble the human form. Robot arm LED Lights such as LEDs (Light Emitting Diodes) can be connected to a computer and respond to electrical signals which tell them to switch on and off./detect the presence and location of a touch within the display area. The term generally refers to touch or contact to the display of the device by a finger. Touchscreens can also sense other passive objects, such as a/


Ads by Google