NOISE ELIMINATION CIRCUIT FOR AUDIO EQUIPMENT

摘要

A noise elimination circuit of a computer includes a switch and a converting chip. The switch includes first, second, and third electrodes. The first electrode is connected to a control terminal and the third electrode is connected to a first voltage source. The converting chip includes an input pin and an output pin. The input pin is connected to a second voltage source. The output pin is connected to a control chip that controls a speaker. The output pin is connected to the second electrode. The second voltage source powers on the input pin when the computer is triggered to be powered on and powers off the input pin when the computer is triggered to be powered off. The control terminal sends a control signal to the first electrode to actuate the switch, after the computer is triggered and before the second voltage source powers on the input pin.