Friday, 31 July 2015

What is zener diode and its application

However, when connected in the reverse mode, which is usual in most of its applications , a small leakage current may flow. As the reverse voltage increases to the . It works on the principle of Zener breakdown and is operated in reverse breakdown region. In reverse breakdown region high current flow through the diode leading to high power dissipation.


Now the question arises where this type of diodes are used.

The main application of this type of diodes are as voltage regulator.

Over voltage protector, as voltage reference.

We will discussed what is the application of zener diode as voltage . The nearest preferred value is 5. Where different levels of voltage are . Some of these are: voltage stabilizers or regulators (in shunt mode), surge suppressors for device protection, peak clippers, switching operations, reference elements and in meter protection applications. A zener diode is always operated in its reverse biased condition. A voltage regulator circuit can be designed using a .

Proximity card price

Proximity Plastic ID Card pricing and availability from BarcodesInc. Genuine HID Proximity cards at Low prices. FREE UK delivery on online orders over £100.


Browse our range of contactless smart cards today. RFID Access Proximity Card125Khz operating frequency.

Pre-programmed with unique ID number.

Compatible with all ID door access devices or ID reader.

Contactless transmission of data and supply energ. Note: Users need to programme the digits ID number which has print on the card , . Find here Proximity Cards suppliers, manufacturers, wholesalers, traders with Proximity Cards prices for buying. We carry Prox ID Cards, KeyFobs, and PVC Patches from leading manufacturers. HID Cards -Buy HID Cards at LOW Prices from the HID Prox Experts. AlphaPass Proximity Cards –Lower price and quicker turn around time than name -bran but work with most proximity badge readers, including HID readers.


Find great deals on eBay for Proximity Card Reader in Security Control Panels and Keypads.

Electrical test leads

The RS Range of test leads are ideal for technicians and engineers across all industries. With products including 4mm test leads , BNC test leads and coaxial test leads , you are sure to find the correct test lead for your application. Check out the latest great value discount and bundle offers on . Electrical Test Equipment Offers. Description, Price, Lead Type, Connector Type, Product Type, Fuse Lead Length, Current Rating, Safety Category Voltage, Safety Category, Minimum Operating Temperature, Maximum Operating Temperature, Calibrate Safety Category Level .

Price match gurantee Price match guarantee.

We can price match this item if found elsewhere.

Ideal for getting everything you need for testing in one place and compatible with most electrical testers. Many different testing procedures rely on the use of high quality test leads to actually be possible. Test leads form one of the most vital components of an electrical test instrument.


More often than not, problems with test meters can be traced to faulty leads.

Uninterruptable power supply

A UPS differs from an auxiliary or emergency power system or standby generator in that it will provide . Power protection and management solutions from home to data center to industrial environments. It also provides protection from power surges. A sudden power outage or surge can compromise your data and cause expensive loss of files or hardware.


Uninterrupted power supplies ( UPS ) step in to provide extra battery life, crucial in both emergency situations and for day-to- day operations.

What your computer expects to get from the power grid (in the United States) is 120-volt AC power oscillating at Hertz (see How Power Distribution Grids Work for more information).

Do you need an uninterruptible power supply ?

PC UPS , Back Up Power Supply, Uninterruptable Power Supply , Computer UPS with fast shipping and top-rated customer service. Protect PCs, servers and other electronics against blackouts, brownouts, surges, data loss and downtime with reliable battery backup UPS systems.

Thursday, 30 July 2015

Craftsman riding lawn mower transmission

They eventually stop moving at all after minutes of mowing. This happens because the fluid gets old and gets moisture inside of it, and then the moisture aerates the fluid into foam and . Hydrostatic Garden Tractor transmission rebuild . I have two craftsman riding mowers which have the freewheeling or disengaging lever on the back of the trans-axle. It went pretty well except for one little oversight.

Noticed this while mowing the lawn.

NOTE: This tractor is turned on its side for video purposes only.

You should put it on ramps to change this belt. If this video helped you and you feel like. To purge the transaxle follow these steps: 1. Place tractor on an open level surface, clear of objects. Turn engine off and apply parking brake. Disengage transaxle by placing freewheel control in disengaged position.


Sitting in the tractor seat, start en. IMPORTANT: Should your transmission require removal for service or replacement, it should be purged after reinstallation before operating the tractor.

Intellibatt

Our critical power experts provide predictive monitoring and battery services helping data centers ensure uptime and improve ROI. IntelliBatt Secures $Million Equity Investment to Expand Leadership in Data Center Power Monitoring. Suited for both VRLA and wet cell batteries, the system is cost effective and can be easily installed on UPS, Generator, DC plant and switchgear battery systems. The new name is an effort by the company to no longer be . Canara ensures that your critical backup .

Canara, evoking the canary in the coal mine, better reflects our new analytical services as well as our stellar track record in .

Providing services in the telecommunications and energy sector, oil and gas industries and pharmaceutical industries.

This Guide can be used by facilities engineers, maintenance staff . These are environments where power HAS to stay on to run the servers that deliver all the critical utilities of the Internet we have become so dependent upon as a .

Banner engineering australia

Cookies: We use them to give you the best. Fill out the form below and we will do our best to get back to you within hours. You can also Contact an Engineer.


We are able to serve, support and fulfill the automation needs and safety requirements of companies everywhere. BANNER ENGINEERING products at competitive prices.

Same day dispatch for even the smallest of orders and competitive pricing on leading global brands.

Companies all around the world use our award winning products and solutions to increase efficiency, reduce expenses, safeguard equipment .

Have questions about application solutions, products, availability, or other topics ? Ultrasonic sensors use sound waves rather than light, making them ideal for stable detection of uneven surfaces, liquids, clear objects, and objects in dirty environments. These sensors work well for applications that require precise measurements between stationary and moving objects.

Chroma centre

Croma Retail is one stop destination for online shopping in India. Buy online all the products that you need here. Call our hours Croma Customer Care No. Dine in one of our stylish restaurants or eat at home.


The one-stop destination for all your electronics gadget needs is this online portal , Tata Croma.

Our morning services have groups for babies, children and teenagers.

Cromā is an Indian retail chain for consumer electronics and durables.

Tata Group company Infiniti Retail runs Cromā . Now £(Was £̶1̶2̶7̶) on TripAdvisor: Chroma Eptha, Rome. With nearly 3contributions per minute, TripAdvisor always has the freshest information. Explore your passion for consumer electronic products with the free Croma Android App. In addition the new Croma Pizza Point has opened at the ODEON Trafford Centre , ODEON Greenwich and ODEON Orpington, where we are introducing an innovative pizza - at - the - cinema offer. This latest addition will offer freshly baked pizzas made to .

100 Mhz oscilloscope

Find great deals on eBay for Oscilloscope 100MHz in Oscilloscopes. Compare this to like scopes with just kb memory vs Mb! Hobbyists can also benefit from the many features of the instruments.


Compare Oscilloscope specifications and find the right Tektronix oscilloscope for your needs. The peak to peak voltage (VPP) on the Tektronix scope is .

Call us for personal help in choosing!

MHz oscilloscopes with unbelievably low starting prices.

Buy OSCILLOSCOPE 1MHZ online at low price in India on Amazon. Check out OSCILLOSCOPE 1MHZ reviews, ratings, features, specifications and more at Amazon. This unit has countless reviews online and many reviews on this page from our customers. You cant go wrong after reading all the reviews and feedback from . Free delivery on eligible orders of £or more. Edge, Pulse Width, video, Slope, Alternate trigger mode.


So your probe will pass the signals between . LCD display, automatic measurements, waveform recorder.

Wednesday, 29 July 2015

Global proximity

Software solutions, development, support and maintenance. Specialists in developing, customising and modernising business critical IBM i (AS400) applications across Europe. Proximity Madrid - Gold - Outdoor Lions. Search for tubes, trams, hotels, schools, supermarkets, cinemas, hospitals, points of interest or sporting venues.


Increasing demand for accurate detection of the hindrances in vehicles has led to an upsurge in adoption of the proximity sensors globally.

Manufacturers in the automotive industry are increasingly integrating the proximity sensors in the doors of the vehicle in order to enable quick access in the vehicles.

It has been optimized to include only those functions necessary for basic, reliable sensing.

The report covers the market landscape and its growth prospects over the coming years. Featuring contactless 1kHz RFID technology, HID Prox readers are affordable, integrate seamlessly with access control systems, and allow for the use of multiple form factors, including smart cards, fobs .

Kerja surveyor

Surat Lamaran Kerja Dalam Bahasa Inggris yang Baik dan Benar - ben jobs. Pencarian kerja anda bermula di sini. Land Surveyor jawatan kosong disediakan di neuvoo Malaysia.


Perhitungan quantity harus dilakukan dengan keakuratan yang tinggi dan tidak . Please click on the link to log.

BADAN PERTANAHAN NASIONAL REPUBLIK INDONESIA.

KERJA ( SURVEYOR KADA. STER BERLISENSI).

Lowongan Kerja untuk Marine Surveyor. Semua kerja Quantity Surveyor di Indonesia. Mesin pencari pekerjaan Careerjet. Learn what its like to work for PT Surveyor Indonesia (Persero) by reading employee ratings and reviews on JobStreet.


Cari lowongan kerja Survei Kuantitas lokasi alamat kantor kerja di Banten temukan di JobStreet. English dictionary definition of surveyor. Find more Quantity Surveying-related job vacancies in Kuala Lumpur at JobStreet.


Perniagaan utama KBSB ialah pembinaan bangunan, kerja - kerja air dan pengurusan fasiliti. Kami mengekalkan komitmen kepada integriti, .

Thou to mm conversion

This page allows you to convert length values expressed in thou to their equivalent in millimeters. The converter also works the other way round: if you enter the value in millimeters in the mm fiel the . Definitions and calculation formulas. Convert thou to millimeter ( thou to mm ) and back.


Easy table showing the conversion from Thou to Millimetres.

This can be used to convert thin shim stock measurements from Imperial to Metric.

Reverse formula ( thou to millimeters ).

PCB Designers often need to work on metric as well as inches and thou. Thou stands for one thousandth of an inch and is called mils in US. We are presenting the formula and calculator for converting thou to mm and vice versa. The formula for thou to mm conversion goes as follows. Conversion chart for thou (British (Imperial) Measure, distance and length).


Instant units and measurements conversion , metric conversion , other systems.

What happens if dc supply is given to transformer

So in the given case ie, for DC input,no emf produced in primary . This voltage do not affect the secondary winding . This will happen only in AC supply. With DC there is no induced EMFs and the current is controlled only by t. There would be no current on the other side of the transformer , unless the power of the source was constantly modulated.

Does transformer work on DC Supply ?

What you are describing is essential to all power electronics today.

The basic principle are the Buck (pulse, step down) and Boost (pulse, step up) typologies. I assume you know that all electrical and electronic components work on smoke, which is injected at the factory. We know this is true, because if anything happens that allo. The dc supply is given to transformers are may get damege what is region?


Why current lags voltage in an inductive circuit. When Dc supply is given to primary of transformer it draws heavy current from the DC source due to absence of back emf and burnt out. Because the dc current not varying with time it has constant value throught the period.

Locating unmarked graves

Ground Penetrating Radar (GPR). Prehistoric grave sites contain fragile, easily destroyed remains. Investigation by qualified archeologists may be necessary if the . LOCATING UNMARKED GRAVES BY PROBING By Kristin J. Although you can identify many apparently unmarked graves simply by looking for rectangular depressions on the ground surface or for intentionally placed fieldstones, other historic burials are more difficult to locate .

Burials are often poorly marked in cemeteries, and many cemeteries suffer from poor or non- existent record keeping.

Likewise, the disturbance of an unmarked grave by a .

Most historic cemeteries contain unmarked graves. When development, improvements, additional . The most common ways of locating graves are. It should be noted that no process is.


There are specific laws related to disturbance of graves in. Graves Located in Oklahoma Using GPR. GPRS located approximately 2graves within the acre of land . But occasionally, a little variety is added to our days when we are asked to use GPR to locate unmarked graves in a .

Tuesday, 28 July 2015

Nexwatch access control

Professional Edition uses the . Complete system solutions for access control and security management. Integrated access control from Honeywell Systems, offers complete access control systems, including access management systems, card readers, biometric readers, Smartcards, Smartcard readers, and credentials. Engineered and manufactured by the company that invented proximity access control , DigiReader Series Digital Proximity Readers.


EARTH ground all enclosures, for proper installation.

Use suppressors on all door strikes.

Use S-suppressors for installation.

User programmable relay outputs allow for specific control needs. NexWatch recommends only DC strikes. RS4communication to all modules. Dedicated cabinet tamper and power monitor inputs.


The PW-Series Modular Control System is an advanced access control hardware architecture capable of providing solutions for large enterprise applications. Never connect card readers to any critical entry, exit door, barrier, elevator or gate without providing an alternative exit in accordance with all fire and life safety codes pertinent to the installation.

Nema motor frame sizes hp

Reed Electric is an electric motor repair and sales operation with facilities located in Los Angeles, California and Reno, Nevada. THREE PHASE FRAME SIZES — GENERAL PURPOSE. Other popular mountings for NEMA rated motors are resilient mount, C-face mount and D-flange mount.


Indicates the number is an approximate value. Foot Mounting Holes Multiple holes on specified frames.

Frame numbers are not intended to indicate electrical characteristics such as horsepower.

There are many motors of the same horsepower built in different frames.

The information included in this document refers to standard construction features and the most common variations for. Insulated Bearing Housing for IEC Frames. Another important achievement has been the standardization of motors by the.


These shaft diameters are based on the. National Electric Manufacturers Association ( NEMA ). A key part of motor interchangeability has been the stan- dardization of frame sizes. This means that the same horse- power, spee and enclosure will .

Leica disto d2 laser measure

The favourite measuring tool for many indoor trades such as electricians, plumbers and flooring contractors. This small and handy laser distance meter has an impressive range of 100m and is equipped with many useful functions. Measurements out of corners or from edges are no problem with the multi- functional . Easy to use laser distance measure , with measuring range from 0. Small, compact, rugge reliable and offering excellent value for money.

Free delivery on eligible orders of £ or more.

Used this several times to record room dimensions, ceiling heights etc.

Quite an expensive piece of kit when compared to others on the market, but you get what you pay for - a quality measuring tool, producing highly accurate and ultimately saving time and effort. Other more advanced functions aside, the D11 D, D21 X3and D3a BT feature . Fast reliable indoor distance measurement. Leica Disto DLaser Measure - NEW 2. Shortcut keys for addition, subtraction, area and volume calculation make measuring fast and very reliable.