CIRCUIT FOR PROTECTING AN ELECTRIC LOAD FROM OVERVOLTAGES
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United States of America Patent
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Issued Date -
Oct 10, 2013
app pub date -
Dec 5, 2011
filing date -
Dec 14, 2010
priority date (Note) -
Abandoned
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Abstract
A circuit for protecting an electric load from overvoltages has an n-channel MOSFET (metal oxide semiconductor field-effect transistor) (T1) and a means for producing a reference voltage in order to achieve the most effective overvoltage protection possible by means of the cheapest and most compact circuit possible, wherein the means for producing a reference voltage is connected to the gate of the MOSFET (T1), wherein a supply voltage is applied to the circuit on the input side and wherein the gate is supplied with a voltage greater than the supply voltage using an auxiliary voltage source in such a way that the MOSFET (T1) is turned on.
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