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US 4,904,925 AGranted
Apparatus for recovering an alternating variable of a controlled semiconductor
AssigneeSiemens Aktiengesellschaft
InventorMarcos A. Cavalcanti Pereira
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AssigneeSiemens Aktiengesellschaft
InventorMarcos A. Cavalcanti Pereira
Estimating the term…
An apparatus for recovering an alternating variable having a direct current component in a controlled semiconductor component includes an electromagnetic transducer for measurement having a secondary winding. A sample and hold element has a trigger input, an output and another input connected to the secondary winding of the transducer. A control system for the semiconductor component is connected to the trigger input for feeding trigger pulses from the control system to the trigger input at respective control times of the semiconductor component. A comparator has a first input connected to the output of the sample and hold element for receiving an output signal proportional to the direct current component, a second input connected to the secondary winding of the transducer and an output supplying the recovered alternating variable.
Apparatus for recovering an alternating variable having a direct current component of a controlled semiconductor component, comprising an electromagnetic transducer for measurement having a secondary winding, a sample and hold element having a trigger input, an output and another input connected to said secondary winding of said transducer, a control system for the semiconductor component connected to said trigger input for feeding trigger pulses from said control system to said trigger input at respective control times of the semiconductor component, and a comparator having a first input connected to said output of said sample and hold element for receiving an output signal proportional to the direct current component, a second input connected to said secondary winding of said transducer and an output supplying the simulated alternating variable.
Dependencies are inferred from the claim text.