Successful programmable relay board for High-Risk Applications
Reliable programmable relay board Styles for Industrial and Industrial Applications
CHINA – ?¡ãAny Electronics?¡À proudly presents their whole variety of programmable relay board . They provide a complete set of programmable relay board products along with other interrelated merchandise. These units are observed in various applications such as industrial applications, industrial manage circuits in addition to OEM Panels. These devices include great precision and repeatability. The common programmable relay board which can be made nowadays demand quite tiny panel space.
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I am in last year of enginnerin and i've to submit project on digital ic tester..for that i need circuot diagram of it first...so can any one help me in findin it..
And got the following answer:
A big question is how much testing do you want to do. There are two kinds of tests. One is functional, the other parametric. For functional tests, apply an input word (a binary number representing all inputs) on inputs the DUT (device under test), and verify the output word is correct. Test all possible input words to verify functionality. Repeat the tests. This can be easily done with a microcontoller, say with 20 or 30 programmable input/outputs. You need to make a program for each device type that programs inputs and outputs, then has a table with each input word and associated output word. No other circuitry really needed. If you program cleverly, you can just make a table for input/output words for each device type, to minimize programming. parametric tests are more fun. You test each input to verify the ESD diodes, IIL, IIH, etc. and same for outputs. You need a circuit for each type of test. Fairchild indicated the test circuits on some of the old datasheets, google for datasheets to see. Finally, propagation delays are tested. These are the most fun. You need very accurate measurements to verify the chips run full speed. Lotsa luck for mortals doing that! Industrial testers originally had a test board for each device. power and ground were not always in the same place. They have relays that cut in and out circuitry for each pin to appply input signals or output signals. Later, used general purpose test heads that allowed the program to select circuitry for each pin, either power, ground, input, or output. Then, program does functional, parametric, and timing measurements. Most production test regimes are cleverly designed such that testing at cold and hot temperatures is not needed. Good luck!
The programmable relay board function incredibly well with distinctive applications which are particular to power distribution and protection. The relays include wide adjustment ranges with a scale which is easy to study either in three or four digits according to the model. These programmable relay board assist in rising the flexibility in the applications, lower the all round power and maintenance expenses. There are actually relays that are applied for basic purposes which are available in trustworthy styles with speedy replacement selections. And you will discover models which might be made use of for industrial applications and heavier duty applications that work on massive loads. These merchandise are created to meet the lifetime industrial handle demands of the applications.
Their most up-to-date goods will be the Time counter, Timer Delay, programmable relay board, Quick Connect Couplings, Electronic Motor Couplings, Aluminum Couplings, Morse Couplings and a variety of other individuals. The web page gives a detailed description of every model in many categories of programmable relay board couplings and sensors. These goods are incredibly beneficial for high-risk applications. The programmable relay board are also available with attributes like numerous timing ranges and functions. The firm is at the moment seeking agents and dealers who can promote and sell their factory produced products. They may be generally on a lookout for creating new and much more reputable products determined by the demands and requirements in the sector.