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US 2001/0019258 A1Published application
Voltage transformer and associated operating method
AssigneeSiemens Aktiengesellschaft
InventorManfred Frohler
Life of this patent
Estimating the term…
Abstract
A voltage transformer includes a voltage input and a voltage output. A capacitor is disposed on the output side for providing an output voltage. A controllable switching element controls a current flowing through a coil. A control unit is connected on the output side to the switching element, for controlling switching times of the switching element. The control unit controls the switching times as a function of the input and output voltages. An associated operating method is also provided.
Claims21
A voltage transformer, comprising:
- an input side having a voltage input carrying an input voltage;
- an output side having a voltage output carrying an output voltage;
- a capacitor disposed on said output side, for providing said output voltage;
- a coil having a coil current;
- a controllable switching element connected to said coil for controlling current flowing through said coil, said switching element having switching times for setting a voltage ratio;
- and
- a control unit, said control unit having an input side connected to said voltage input and to said voltage output, and said control unit having an output side connected to said switching element for controlling said switching times of said switching element as a function of said input voltage and said output voltage, to set said voltage ratio and to prevent an excessive rise in said coil current.
4 more elements
A motor vehicle network voltage transformer, comprising:
- an input side having a voltage input carrying an input voltage;
- an output side having a voltage output carrying an output voltage;
- a capacitor disposed on said output side, for providing said output voltage;
- a coil having a coil current;
- a controllable switching element connected to said coil for controlling current flowing through said coil, said switching element having switching times for setting a voltage ratio;
- and
- a control unit, said control unit having an input side connected to said voltage input and to said voltage output, and said control unit having an output side connected to said switching element for controlling said switching times of said switching element as a function of said input voltage and said output voltage, to set said voltage ratio and to prevent an excessive rise in said coil current.
4 more elements
Dependencies are inferred from the claim text.