Intelligent electronic charger

An intelligent electronic charger of which the circuit structure is an improvement in a traditional circuit structure is characterized by adopting a double-pipe pulse-width modulation circuit comprising a feedback circuit, an over-current protection circuit, a voltage modulation circuit and a comparator circuit, wherein the feedback circuit is formed in the way that a capacitor (C3) and a resistor (R3) are connected in series and then connected in parallel with an inductor (L2); the over-current protection circuit consists of a resistor (R4), a resistor (R5), a capacitor (C5) and a triode (Q2); the voltage modulation circuit consists of a stabilovolt (DZ2), an amplifier (U1), a triode (Q2) and a capacitor (C6); and the comparator circuit consists of an amplifier (U3), a stabilovolt (DZ4) and a resistor (R15). The circuit structure has the advantages of light weight, material conservation, high stability, power conservation, wide input voltage range, low cost, high reliability and the like.