Voltage control device for ear
US9628904 Patents
Disclosed is a Voltage control device including a voltage detector detecting an output Voltage output from an output port of a mobile communication device; and a Voltage control circuit bypassing the output Voltage to an earpiece in which a speaker and a microphone are integrally formed when the output voltage detected by the voltage detector is between a first voltage and a second Voltage higher than the first voltage. 3 Claims, 15 Drawing Sheets
3 claims. 61,866 characters of text.