一种耳机插拔检测装置

Earphone pull-out and insert detector

Abstract

An earplug pulling detecting device comprises a voltage divider circuit composed of a pulling-up resistance and a pulling-down resistance, a clamp circuit connected in parallel with the pulling-down resistance. The other end of the pulling-up resistance is connected with the power supply and the other end of the pulling-down resistance is connected with the ground. Compared with the prior art, the earplug pulling detecting device prevents the reliability problem resulted from the use of the mechanic reed inside the earplug socket in the realization of the voltage divider circuit generated from the earplug pulling state signal and further improves the reliability of the terminal products without affect on the actual sound effect.
一种耳机插拔检测装置,包括上拉电阻和下拉电阻串接组成的分压电路、并联于所述下拉电阻的钳位电路,所述上拉电阻的另一端接电源,下拉电阻的另一端接地。与现有的耳机插拔检测电路相比,本实用新型在实现耳机插拔状态信号产生的分压电路中避免使用了耳机插座内部的机械簧片而导致产生的可靠性问题,在不影响实际音效的基础上,进一步提高了终端产品的可靠性。

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Cited By (10)

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