Protective sleeve

A protective sleeve, used for mobile terminals (2), wherein the protective sleeve includes a shell (1) and a luminous component (10) provided on the shell (1), the protective sleeve also includes a microphone (3), which is provided on the shell (1) with being used to receive an audio signal and convert it into a pulse signal, and a voice-activated lamp circuit (4), which is provided on the shell (1) with being electronically connected with the microphone (3) and the luminous component (10), respectively and being used to receive the pulse signal and generate a trigger signal corresponding to the pulse signal to turn on and off the luminous component (10);

• wherein the voice-activated lamp circuit (4) includes a pulse distributor integrated circuit (41), whose type is FR2067S;
• the pulse distributor integrated circuit (41) includes Operating Point pin (“OP pin”), Voltage Drain Drain pin (“VDD pin”), ON/OFF pin, Electroluminesce/Light Emitting Diode pin (“EL/LED pin”), and Ground pin (“GND pin”), the output port of the microphone (3) is electrically connected to the VDD pin of the pulse distributor integrated circuit (41) via a first protective resistor (R1);
• the VDD pin of the pulse distributor integrated circuit (41) is also electrically connected to a positive electrode of solar cells (B1) via a third protective resistor (R3);
• the OP pin of the pulse distributor integrated circuit (41) is electrically connected to the output port of the microphone (3) via a first filter capacitor (C1);
• the OP pin of the pulse distributor integrated circuit (41) is also electrically connected to the GND pin of the pulse distributor integrated circuit (41) via a second protective resistor (R2);
• the luminous component (10) includes a positive electrode and a negative electrode;
• the EL/LED pin of the pulse distributor integrated circuit (41) is electrically connected to the negative electrode of the luminous component (10);
• the positive electrode of the luminous component (10) is electrically connected to the positive electrode of the solar cells (B1);
• a negative electrode of the solar cells (B1) is electrically connected to the GND pin of the pulse distributor integrated circuit (41).