I want to use this SSR for a project:
Their are a few things I don’t understand on the data sheet. Like this:
When making the transition from On to Off state, a snubber circuit should be used ensure that sudden drops
in current are not accompanied by large instantaneous changes in voltage across the Triac.
This fast change in voltage is brought about by the phase difference between current and voltage.
Primarily, this is experienced in driving loads which are inductive such as motors and solenoids.
Following the procedure outlined above should provide sufficient result
I am going to drive motors, but it will just be an occasional on/off (couple of times a day), not PWM or anything. I don’t know if I need that snubber circuit, or what it is exactly. I am using these motors:
Eheim 1260 universal pump
I can’t find specifications for this motor, but it is very low speed (1rpm) 110V AC.
I would also like to use them on these LED drivers:
Mean Well ELN-60-48P
I will use Arduino PWM pins for daylight simulation, but I guess you are still supposed to turn them off with SSR or relay at night (rather than try and dim close to 0 with PWM)
The second question; I don’t understand this graph on spec sheet:
Fig.2 RMS ON-state Current vs.
I would like to use these SSR without heatsinks. Each one would be switching <1 amp. Does that look like it will work, or will I still need a small heatsink?