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Guidelines for reading an optocoupler datasheet

Guidelines for reading an optocoupler datasheet

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Optocouplers, also known as opto-isolators, are components that transfer electrical signals between two isolated circuits by using infrared light. As an isolator, an optocoupler can prevent high voltages from affecting the side of the circuit receiving the signal. Transferring signals over a light barrier by using an infrared light-emitting diode and a light-sensitive product, such […]

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Major step for implantable drug delivery device

Major step for implantable drug-delivery device

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An implantable, microchip-based device may soon replace the injections and pills now needed to treat chronic diseases: Earlier this month, MIT spinout Microchips Biotech partnered with a pharmaceutical giant to commercialize its wirelessly controlled, implantable, microchip-based devices that store and release drugs inside the body over many years. Invented by Microchips Biotech co-founders Michael Cima, the

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Samsung Researchers Nearly Double Lithium ion Battery Capacity

Samsung Researchers Nearly Double Lithium-ion Battery Capacity

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A low-magnification tunneling electron microscope (TEM) image of Gr–Si nanoparticle (NP). (b) A higher-magnification image for the same Gr–Si NP from the white box in a. (Insets) The line profiles from the two red boxes indicate that the interlayer spacing between graphene layers is ~3.4 Å, in good agreement with that of typical graphene layers based

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Simplify DC DC Converter Characterization

Simplify DC-DC Converter Characterization

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DC-DC converters are widely used components that convert DC power from one voltage to another, producing a regulated output voltage. These devices are used in many electronic products, including laptops, mobile phones, and instrumentation. Like any device, DC-DC converters need to be characterized by manufacturers and by engineers evaluating them for a design. Given the

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How to Build PCB Online using Web Based EDA Tools

How to Build PCB Online using Web Based EDA Tools

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This is a brief review of the capabilities and ease of use of three of the most interesting, innovative and downright disruptive web-based EDA tools: EasyEDA Upverter Autodesk 123D Circuits (formerly Circuits.io) The same simple astable multivibrator circuit is entered into each tool and the design process followed through simulation (where offered), to PCB layout

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