Patent ID: 9363862
Filing Date: 2016-06-07
CPC Classification: G05F,H05B

Claim Text:
1. A constant current driver circuit comprising: a current source tank circuit configured to receive power from a power source and provide an output current to a load as a function of a control signal; the current source tank circuit including a circuit ground; a controller having an output current sensing input, a reference current input, and a control signal output; the control signal output is configured to provide the control signal to the current source tank circuit; the controller is configured to adjust the control signal as a function of a sensed output current received at the output current sensing input and a sensed reference current received at the reference current input; an output current sensing circuit operable to sense the output current provided by the current source tank circuit to the load and provide an amplified current sensing signal to the output current sensing input of the controller; a gain control circuit operable to the output current sensing circuit comprises