Energy Supply
First Claim
1. An energy supply unit for a field device that can be operated with a nominal voltage, comprising a first energy supply with variable output voltage for the field device, an energy storage unit which can be charged via a charging circuit arranged between the first energy supply unit and the energy storage unit, wherein the charging circuit is switched in a first state, in which the output voltage is above a predetermined value, such that the field device is operated via the first energy supply unit and the energy storage unit is charged, and the charging circuit is switched in a second state, in which the output voltage is below the predetermined value, such that the field device is supplied via the first energy supply unit and the energy storage unit.
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Accused Products
Abstract
The invention is an energy supply for a field device that can be operated at a normal voltage, comprising the first energy supply having variable output voltage for the field device, an energy store, which can be charged by means of a charging circuit, which is arranged between the first energy supply and the energy store, wherein a first state, in which the output voltage is above a predetermined value, the charging circuit is switched in such a way that the field device is operated by means of the first energy supply and the energy store is charged, and in a second state, in which the output voltage is below the predetermined value, the charging circuit is switched in such a way that the field device is supplied by means of the first energy supply and the energy store.
5 Citations
8 Claims
- 1. An energy supply unit for a field device that can be operated with a nominal voltage, comprising a first energy supply with variable output voltage for the field device, an energy storage unit which can be charged via a charging circuit arranged between the first energy supply unit and the energy storage unit, wherein the charging circuit is switched in a first state, in which the output voltage is above a predetermined value, such that the field device is operated via the first energy supply unit and the energy storage unit is charged, and the charging circuit is switched in a second state, in which the output voltage is below the predetermined value, such that the field device is supplied via the first energy supply unit and the energy storage unit.
Specification