Switching circuit having a reduced output impedance

Details Switching circuit having a reduced output impedance Switching circuit having a reduced output impedance

H - Electricity

04

B

H04B 1/44 (2006.01) H04M 1/725 (2006.01) H04Q 7/32 (2006.01)

Patent

CA 2057542

In a switching circuit for use in a mobile telephone device in controllably transmitting a speech signal to a radio transmission unit through an output terminal, a first switch is controlled by a control signal which is supplied to a control terminal with a high level and a low level, for respectively putting the first switch in a conductive and a non- conductive state when a second switch is put in its off and on states. A capacitor is connected between the control terminal and the output terminal in order to make the switching circuit have a low output impedance when the first switch is put in its off state.

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