Patent ID: 9300218
Filing Date: 2016-03-29
CPC Classification: G08C,H02M

Claim Text:
1. A signal feed separator for dead-zero or live-zero measuring signals, comprising: a primary-side feed input; a secondary-side output; a DC transformer having a primary side and a secondary side for transferring primary-side measurement input current supplied to the primary side to secondary side measurement output current of the secondary side; an output stage comprising a transistor for providing the secondary-side measurement output current; an auxiliary energy feed for supplying energy for the primary side and for supplying energy for the secondary side; a control device for providing a controlled output voltage; and a measurement device for measuring the output voltage; wherein: a voltage of the auxiliary energy feed is controlled on the secondary side by flail the control device with the aid of the measurement device, so that a power loss of the transistor of the output stage is independent of a burden connected to the output stage; and wherein the measurement device is configured to determine a collector potential of the transistor.