US 12,424,566 B2
Electromagnetic interference suppression circuit and intelligent electronic device
Ketao Li, Toronto (CA); Shaohang Cui, Toronto (CA); Yan Ding, Toronto (CA); Yufan Wang, Toronto (CA); and Liang Wang, Toronto (CA)
Assigned to Accuenergy (Canada) Inc., (CA)
Filed by Accuenergy (Canada) Inc., Toronto (CA)
Filed on Jun. 10, 2022, as Appl. No. 17/837,153.
Prior Publication US 2023/0403834 A1, Dec. 14, 2023
Int. Cl. H01L 23/552 (2006.01); H01L 25/16 (2023.01); H03H 1/00 (2006.01); H03H 7/06 (2006.01)
CPC H01L 23/552 (2013.01) [H01L 25/167 (2013.01); H03H 7/06 (2013.01); H03H 1/0007 (2013.01)] 6 Claims
OG exemplary drawing
 
4. An intelligent electronic device (IED) comprising an electromagnetic interference suppression circuit, wherein the circuit comprising:
at least one ferrite bead disposed at an input port of the circuit;
a transient voltage suppression diode, wherein either terminal of the transient voltage suppression diode is connected with the at least one ferrite bead;
a resistor network connected with the transient voltage suppression diode, wherein the resistor network comprises at least one anti-surge resistor; and
an optocoupler with an alternating current input response coupled to the resistor network.