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Enabling devices for a Power over Ethernet world
Enabling devices for a Power over Ethernet world

... A standard CAT5 Ethernet cable has four twisted pairs, only two of which are required for the transmission of data. With PoE, there is a high degree of flexibility with the IEEE802.3af standard allowing DC power of either polarity to be transferred using either the two spare pairs or superimposed on ...
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... with N nodes into a set of N-1 equations • These equations will allow you to solve for every single voltage and current • Works on any circuit, linear or nonlinear! • Much more efficient than the kitchen sink ...
Data Sheet - Profusion plc
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... Zobel resistor, which in conjunction with CZ , terminates the output filter at high frequencies. The combination of RZ and CZ minimizes peaking of the output filter under both no load conditions or with real world loads, including loudspeakers which usually exhibit a rising switching impedance with ...
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... of static charge transfer that can arise from human contact with an IC pin. Typically, about 0.6µc of charge is carried on a body capacitance of 100pF, generating a potential of 2kV (or higher) to discharge from the contacted IC to ground for a duration of more than 100ns. In ESD protection scheme f ...
Chapter 7 Direct-Current Circuits
Chapter 7 Direct-Current Circuits

... One can have closed circuits, through which current flows, or open circuits in which there are no currents. Usually by accident, wires may touch, causing a short circuit. Most of the current flows through the short, very little will flow through the load. This may burn out a piece of electrical equ ...
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Surge protector



A surge protector (or surge suppressor) is an appliance/device designed to protect electrical devices from voltage spikes. A surge protector attempts to limit the voltage supplied to an electric device by either blocking or by shorting to ground any unwanted voltages above a safe threshold. This article primarily discusses specifications and components relevant to the type of protector that diverts (shorts) a voltage spike to ground; however, there is some coverage of other methods.The terms surge protection device (SPD), or transient voltage surge suppressor (TVSS), are used to describe electrical devices typically installed in power distribution panels, process control systems, communications systems, and other heavy-duty industrial systems, for the purpose of protecting against electrical surges and spikes, including those caused by lightning. Scaled-down versions of these devices are sometimes installed in residential service entrance electrical panels, to protect equipment in a household from similar hazards.Many power strips have basic surge protection built in; these are typically clearly labeled as such. However, power strips that do not provide surge protection are sometimes erroneously referred to as ""surge protectors"".
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