Abstract:
A smart card connection circuit of an electronic device which includes a card holder, a travel switch, and a switching unit; a contact of the travel switch is located in the card holder, and an output end of the travel switch is connected to a control end of the switching unit; and when a smart card at a preset position in the card holder leaves the preset position, the smart card leaves the contact of the travel switch, the travel switch controls the switching unit to switch to a second output end, and each signal cable pin on the card holder is grounded by using the switching unit before a power cable pin on the card holder is grounded by using the switching unit. The present invention is applied to electronic devices such as a mobile phone and a tablet computer.
Abstract:
A smart card connection circuit of an electronic device which includes a card holder, a travel switch, and a switching unit; a contact of the travel switch is located in the card holder, and an output end of the travel switch is connected to a control end of the switching unit; and when a smart card at a preset position in the card holder leaves the preset position, the smart card leaves the contact of the travel switch, the travel switch controls the switching unit to switch to a second output end, and each signal cable pin on the card holder is grounded by using the switching unit before a power cable pin on the card holder is grounded by using the switching unit. The present invention is applied to electronic devices such as a mobile phone and a tablet computer.
Abstract:
The present invention disclose a charging circuit including: a first input/output end of a wired connection module is configured to connect to an output end, a second input/output end of the wired connection module connects to a first input end of a switch circuit, and the second input/output end connects to a first input/output end; a first input end of a control circuit connects to the second input/output end, and an output end connects to an enabling end of a wireless charging module; an output end connects to a second input end of the switch circuit; a first output end connects to an input/output end; a second input/output end of the shunt circuit connects to the input/output end, a third end of the shunt circuit connects to the output end; an output end of the charging management module is configured to connect to a battery.