Patent ID: 9503038
Filing Date: 2016-11-22
CPC Classification: H03F,H03G,H03M

Claim Text:
1. A current controlling device, comprising: a first resistive circuit, arranged to selectively conduct a first current to a first output terminal from a first input terminal according to a first control signal; and a second resistive circuit, arranged to selectively conduct a second current to a second output terminal from the first input terminal according to a second control signal; wherein when the first resistive circuit conducts the first current to the first output terminal from the first input terminal and when the second resistive circuit does not conduct the second current to the second output terminal from the first input terminal, the first input terminal has a first input impedance; when the first resistive circuit does not conduct the first current to the first output terminal from the first input terminal and when the second resistive circuit conducts the second current to the second output terminal from the first input terminal, the first input terminal has a second input impedance, and the first input impedance substantially equals the second input impedance; and when the first resistive circuit conducts the first current to the first output terminal from the first input terminal, current inputted from the first input terminal is fully conducted to the first output terminal, and when the second resistive circuit conducts the second current to the second output terminal, the current inputted from the first input terminal is not received at the first output terminal.