I use this relay (DC24V) to switch between two solenoid valves (AC 220V). Only one solenoid valve works at any time. Manually switch with SW switch, the switch is closed, the first solenoid valve works, and the second solenoid valve stops. Is there a problem with the SW switch of this circuit? Do I need to connect another RC absorption circuit in parallel with the switch? My relay itself has added a 4148.
Because it is considered that the switch SW controls an inductive load, sparks will occur when the switch is turned off, and the switch will be easily damaged after a long time.
Fitzroy 发表于 September 17, 2020
Connect a 104 capacitor in parallel on both sides of the switch.
Jesseka 发表于 September 17, 2020
This can use two solid state relays.
Shekhar 发表于 September 17, 2020
It is possible to add RC, but choose the appropriate parameters.
