Amplification, filtering and voltage-stabilizing type smartphone charging circuit
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A smart phone, charging circuit technology, applied in battery circuit devices, circuit devices, collectors, etc., can solve the problems of inconvenient replacement or maintenance, inconvenience, etc., and achieve the effect of simple structure, low cost, and extended normal service life
Inactive Publication Date: 2016-12-07
CHENGDU LEIKEER SCI & TECH
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Since the battery of the smart phone is built-in, it is not easy to replace or maintain, so that the user has to charge it frequently, which brings great inconvenience to the user
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[0013] Such as figure 1 As shown, the charging circuit for amplifying, filtering and stabilizing a smartphone of the present invention is mainly composed of a transformer T, an operational amplifier P, a three-terminal regulator U, a triode VT1, a triode VT2, a capacitor C1, a capacitor C2, a capacitor C3, and a capacitor C4. Capacitor C5, capacitor C6, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, Zener diode D1, Zener diode D2, Zener diode D3 and diode D4. Wherein, the three-terminal voltage regulator U adopts a 7805 voltage regulator. The structure of the charging circuit of the present invention is relatively simple, and the damage to the battery of the smart phone can be reduced during charging, thereby prolonging the normal service life of the battery.
[0014] The positive pole of the capacitor C1 is connected to the non-identical terminal of the secondary inductor coil of the transformer T, and its negative pole is connecte...
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Abstract
The invention discloses an amplification, filtering and voltage-stabilizing type smartphone charging circuit which is characterized by being mainly composed of a transformer T, an operational amplifier P, a three-terminal regulator U, a triode VT1, a triode VT2, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a voltage-stabilizing diode D1, a voltage-stabilizing diode D2, a voltage-stabilizing diode D3 and a diode D4. The circuit of the invention is simple in structure and also low in cost; by using the circuit, damage to a phone battery when in charging can be reduced, so that the normal service life of the battery is improved to more than 10000h, namely prolonged by more than 25%, and thus great convenience is provided for smartphone users, and the circuit of the invention is applicable to popularization for use.
Description
technical field [0001] The invention relates to a charging circuit, in particular to an amplifying filter voltage stabilizing charging circuit for smart phones. Background technique [0002] Most of the mobile phones currently in use are smart phones, which are much more powerful than traditional mobile phones, and the time people use their mobile phones has also increased a lot accordingly. Most of the currently used smart phones use built-in batteries, that is, the batteries cannot be taken out. And because the smart phone is in the standby state, its background program is also running normally; and people use the mobile phone for a corresponding increase, so that the battery life of the smart phone is much shorter than that of the traditional mobile phone. It can only be used for about 20 hours, so the charging frequency is relatively high when using a smart phone, and the smart phone needs to be charged every day. [0003] However, the charging circuit currently used i...
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