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The future Of Packaging
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... Ask why we need so many I/Os for computer chips and the answer comes down to “we need more signals”. But electrons are rather poor messengers and that’s the problem. If we used only electrons to carry Internet messages, a web page might take an hour to download. The fleet-footed messenger of the Int ...
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... E.2 Classification of STC Circuits STC circuits can be classified into two categories, low-pass (LP) and high-pass (HP) types, with each category displaying distinctly different signal responses. The task of finding whether an STC circuit is of LP or HP type may be accomplished in a number of ways, t ...
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Opto-isolator



In electronics, an opto-isolator, also called an optocoupler, photocoupler, or optical isolator, is a component that transfers electrical signals between two isolated circuits by using light. Opto-isolators prevent high voltages from affecting the system receiving the signal. Commercially available opto-isolators withstand input-to-output voltages up to 10 kV and voltage transients with speeds up to 10 kV/μs.A common type of opto-isolator consists of an LED and a phototransistor in the same opaque package. Other types of source-sensor combinations include LED-photodiode, LED-LASCR, and lamp-photoresistor pairs. Usually opto-isolators transfer digital (on-off) signals, but some techniques allow them to be used with analog signals.
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