34results about How to "Large calibration range" patented technology

The application discloses a wide-range current regulating circuit, comprising a current source, a first current regulating unit, a second current regulating unit, a second current regulating unit, an output tube and a control circuit. According to the wide-range current regulating circuit, the first mirror current is output by the first current regulating unit, the first mirror current is copied by the second current regulating unit to generate the second mirror current and adjust the size of the second mirror current, meanwhile, the current on the first current regulating unit is increased based on the second mirror current, the current on the first current regulating unit is copied by the second current regulating unit to generate the third mirror current and adjust the size of the third mirror current, meanwhile, the current on the first current regulating unit is reduced, and the current is output by the output tube, so that the greater calibration range can be obtained under the premise of ensuring the precision and the same calibration bit number compared with the traditional regulating circuit, and the greater safety margin is obtained.