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LFC789D25 - Texas Instruments
LFC789D25 - Texas Instruments

... A quality of the old npn regulators was their inherent stability under almost any type of load conditions and output capacitors. An NMOS regulator has the same benefit. Thus, capacitor selection and equivalent-series-resistance (ESR) values are not needed for stability, but still should be chosen pr ...
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... signal ground reference to a single system ground. Safety isolation references standards that have specific requirements for isolating humans from contact with hazardous voltages. It also characterizes the ability of an electrical system to prevent high-voltage and transient voltages to be transmitt ...
Universal Input, 5 W, LED Ballast
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... The output current is sensed by a series resistance, once the voltage drop across this reaches the base-emitter threshold of the PNP transistor current flows in the optocoupler diode and thus in the FB pin of the NCP101x. The LED current is thus set by: ...
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... is the discharge voltage resulting from a discharge current cresting in 45-60µs. The IEC term for this is Switching Impulse Protective Level (SIPL) These three discharge voltages are used to determine how well an arrester is protecting nearby equipment. Specifically they are Copyright ArresterWorks ...
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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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