Internal power supply of a device

US9600012B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Martin Maier · Asperg, DE
• Uwe Weiss · Amberg, DE

Key dates

• Filing date: Jul 26, 2013
• Grant date: Mar 21, 2017
• Expiry date: Jul 26, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02M1/0006
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A device connectable to a three-phase network, wherein the device includes a capacitor, a secondary coil, a diode and, per phase, a conductor and a circuit, where a secondary-side coil is connected in parallel to the capacitor via the diode, the circuit is configured such that a resistor is located in a conductor, a first capacitor is connected parallel to the resistor, a serial circuit of a first primary-side coil is connected in parallel to the first capacitor, energy transfer occurs from a first primary-side coil to a second primary-side coil and to the secondary-side coil, a second capacitor is connected in parallel to the second primary-side coil, the second capacitor is connected to the source connection of a self-conducting field effect transistor, and the gate connection of the self-conducting field effect transistor is connected to the second capacitor to provide an improved internal power supply for the device.