Patent ID: 9497828
Filing Date: 2016-11-15
CPC Classification: H02M,H05B

Claim Text:
1. An electronically controlled switch (ECS) apparatus) adapted to be coupled to an alternating current (AC) source) and to a load so as to control an amount of power delivered from the AC source to the load, the ECS having ON and OFF states and comprising: a first power supply having a first direct current (DC) bus electronically coupled to a rectifier bridge and a first flyback converter, the rectifier bridge configured to receive an AC signal from the AC source and provide a first DC voltage at the first DC bus, the first flyback converter configured to receive the DC voltage and output a first low-voltage signal; a second power supply having a second direct current (DC) bus electronically coupled to a controllable rectifier bridge and a second flyback converter, the controllable rectifier bridge is configured to receive the AC signal from the AC source and provide a second DC voltage at the second DC bus, the second flyback converter configured to receive the second DC voltage and output a second low-voltage signal; and a control portion configured to control the first flyback converter to output the first low-voltage signal when the ECS is in the OFF state, and further configured to control the second flyback converter to output the second low-voltage signal when the ECS is in the ON state, wherein the ECS is configured to use the first or second low voltage for internal operating power.