Headphone circuit using field effect tube as muffler tube
Source: InternetPublisher:smallembedded Keywords: Field effect transistors electromechanical headphones Updated: 2021/04/18
Headphone circuit using field effect tube as muffler tube
Shown is a headphone . The L and R audio signals from the digital signal processing circuit
are sent to the headphone interface through the silencing control circuit. The drains of the Ql and Q2 field effect transistors are respectively connected to the input lines of the L and R signals. When the control circuit sends
the silencing control voltage , Ql and Q2 are turned on, short-circuiting the L and R signals to ground, no signal is output, and the MP3/MP4 player is in a silenced state.
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