Device for Measuring a Load Current
First Claim
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1. A device for measuring a load current in a load circuit, comprising:
- a switch for switching the load current, said switch having a control variable forming a first switch variable and an output variable forming a second switch variable, the output variable being dependent on the control variable;
setting means connected to said switch and configured to keep one of the switch variables constant at a predetermined value; and
an evaluation unit configured to determine the load current from the other switch variable.
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Abstract
A device for measuring a load current in a load circuit that has a switch that switches the load current. The switch has a control variable as a first switch variable and an output variable, which is dependent on the control variable, as a second switch variable. A setting unit keeps one of the switch variables constant at a predetermined value, and an evaluation unit determines the load current from the other switch variable. It is thus possible to dispense with an additional measuring element for measuring the load current, thus keeping the power loss low.
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11 Claims
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1. A device for measuring a load current in a load circuit, comprising:
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a switch for switching the load current, said switch having a control variable forming a first switch variable and an output variable forming a second switch variable, the output variable being dependent on the control variable; setting means connected to said switch and configured to keep one of the switch variables constant at a predetermined value; and an evaluation unit configured to determine the load current from the other switch variable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification