Patent ID: 8860503
Filing Date: 2014-10-14
Classification: H02M

Abstract:
1. A circuit, comprising: a node at which a circuit potential is provided; an alternating voltage providing circuit configured to provide a DC current free alternating voltage; a rectifier coupled to the alternating voltage providing circuit, the rectifier comprising a first rectifier terminal and a second rectifier terminal, wherein the first rectifier terminal or the second rectifier terminal is coupled to the node; and a first output terminal and a second output terminal, wherein the first output terminal is coupled to the first rectifier terminal to provide a first potential and wherein the second output terminal is coupled to the second rectifier terminal to provide a second potential different from the first potential, the difference between the first potential and the second potential defining an output voltage; a resistor comprising a first resistor terminal and a second resistor terminal, wherein the node corresponds to the first resistor terminal or the second resistor terminal; a first switch coupled between a first input capacitor and the first resistor terminal, and wherein the output voltage is constant independent of the circuit potential.