US 12,224,578 B2
Source circuit and power supply and electric system
Xinhai Li, Shenzhen Guangdong (CN); Yaofeng Lin, Shenzhen Guangdong (CN); Zongjie Wu, Shenzhen Guangdong (CN); and Harald Netzer, Nenzing (AT)
Assigned to Tridonic GmbH & Co KG, Dornbirn (AT)
Appl. No. 17/772,256
Filed by Tridonic GmbH & Co KG, Dornbirn (AT)
PCT Filed Nov. 25, 2019, PCT No. PCT/CN2019/120636
§ 371(c)(1), (2) Date Apr. 27, 2022,
PCT Pub. No. WO2021/102634, PCT Pub. Date Jun. 3, 2021.
Prior Publication US 2022/0376492 A1, Nov. 24, 2022
Int. Cl. H02H 9/00 (2006.01); H05B 45/52 (2020.01)
CPC H02H 9/002 (2013.01) [H05B 45/52 (2020.01)] 14 Claims
OG exemplary drawing
 
1. A source circuit, comprising:
one or more voltage sources supplied from a mains circuit receiving AC power or rectified AC power, wherein each voltage source is configured to supply DC voltage to a device comprising one or more LEDs; and
one or more switches respectively connected between the one or more voltage sources and the device to which the respective voltage source supplies DC voltage and wherein each switch is controlled to be turned on according to a timing, after the mains circuit is applied, corresponding to the device for which the respective voltage source is configured to supply DC voltage, and further wherein the timing is a random value corresponding to the respective device, and the random value timing for each switch is stored on the switch.