Current monitoring circuit with accurate current-limit function
A current monitoring and accurate technology, applied in emergency protection circuit devices, circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., can solve the problem of increased short circuit protection power consumption and inability to achieve accurate output current limiting Protection and other issues, to achieve the effect of reducing assembly density, consistent parameters, and simplifying lines
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[0022] The present invention will be further described in detail below in conjunction with specific embodiments, which are for explanation rather than limitation of the present invention.
[0023] See figure 2 , The accurate current-limiting current monitoring circuit provided by the present invention includes an operational amplifier am1. The two input ports of the same direction input terminal and the reverse input terminal are respectively connected in series with symmetrical resistances, and the series resistance is passed through the voltage source port 001 The current-limiting resistor R3 and the voltage regulator tube Vz1 provide voltage; the reverse input terminal of the operational amplifier am1 is connected in series to the output terminal 002 of the operational amplifier am1 through the resistor R1 and the resistor C1, and the series symmetrical resistance of the operational amplifier am1 is also grounded; inductance L1 The output filter loop is formed with the capaci...
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