FIELD DEVICE WITH A SWITCHING CONVERTER CIRCUIT
First Claim
1. Field device comprising:
- a switching converter circuit and a measuring circuit for determining at least one measuring variable, wherein the switching converter circuit is supplied with electric power on the input side and the switching converter circuit is connected to the measuring circuit on the output side and the switching converter circuit supplies the measuring circuit with electric power, andwherein a load circuit is actuated by a load control circuit so that the output-side electric load at the switching converter circuit does not fall below a minimum electric load.
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Accused Products
Abstract
A field device (1) having a switching converter circuit (2) and a measuring circuit (3) for determining at least one measuring variable. The switching converter circuit (2) is supplied with electric power on the input side and the switching converter circuit (2) is connected to the measuring circuit (3) on the output side and the switching converter circuit (2) supplies the measuring circuit (3) with electric power.
The problems associated with changing interfering signals due to the switching converter circuit are reduced in that a load circuit (5) is actuated by a load control circuit (6) so that the output-side electric load at the switching converter circuit (2) does not fall below a minimum electric load.
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Citations
13 Claims
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1. Field device comprising:
- a switching converter circuit and a measuring circuit for determining at least one measuring variable, wherein the switching converter circuit is supplied with electric power on the input side and the switching converter circuit is connected to the measuring circuit on the output side and the switching converter circuit supplies the measuring circuit with electric power, and
wherein a load circuit is actuated by a load control circuit so that the output-side electric load at the switching converter circuit does not fall below a minimum electric load. - View Dependent Claims (2, 4, 5, 6, 7, 8, 9, 10, 12, 13)
- a switching converter circuit and a measuring circuit for determining at least one measuring variable, wherein the switching converter circuit is supplied with electric power on the input side and the switching converter circuit is connected to the measuring circuit on the output side and the switching converter circuit supplies the measuring circuit with electric power, and
- 3. Field device according to claim I, wherein the minimum electric load corresponds to the maximum load of the measuring circuit.
Specification