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Proposed revision to leakage current limitations.
Proposed revision to leakage current limitations.

... within terminal equipment voltages that are hazardous to telephone company personnel. The leakage current limitations also ensure that hazardous voltages do not appear on telephone connections as the result of accidental contact with commercial power. The 1500V test voltage for leakage current tests ...
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... 1. If a net charge Q, flows across any cross-section of a conductor in time t, then the current I, through the cross-section is I = Q/t Q = It 2. The electric potential difference between two points in an electric circuit carrying some current is the work done to move a unit charge from one point to ...
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... A gate seems like a device that must swing open and closed, yet microchips are etched onto silicon wafers that have no moving parts. So how can the gate open and close? Larry Wissel, ASIC Applications Engineer at IBM Microelectronics, replies: “Those of us who design logic gates for computers seldom ...
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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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