CONTROLLED SOURCE OF CURRENT FOR GROUNDED LOAD Russian patent published in 2015 - IPC H02M3/04 

FIELD: electricity.

SUBSTANCE: device comprises the first resistor R₁, the first output of which is the inlet of the device. The second output of R₁ is connected to the first output of the second resistor R₂ and to the inverse inlet of an operational amplifier OA. The outlet of the OA is connected to the second output of R₂ and the first output of the third resistor R₃. The second output of R₃ is connected to the first output of the fourth resistor R₄, the second output of which is grounded. The device comprises a reference resistor R_ref, the first output of which is the outlet of the device, and the non-inverse inlet of the OA is connected to this output. The second output of R_ref via an element-repeater R is connected to the second output of R₃.

EFFECT: reduced distortion of a signal removed from a grounded load during control of controlled current, which increases accuracy of conversion of inlet voltage into outlet current, device simplification.

1 cl, 4 dwg