I have a Solid State Relay ( Solid State Relay - 8A - COM-10636 - SparkFun Electronics ) in a project switching 120V AC. An Atmega328 digital pin is connected through a 200ohm resistor to the SSR +, and the SSR - is connected to ground. The one pin on the load side of the SSR is connected to 120V AC t…

Yes, that's normal. It's not a fully open or closed switch. It, its triac, is a semiconductor - so when it's off it's a large resistance, not an infinite resistance. Does that make sense?

Dependence of Donor Concentration of doped semiconductor on Temperature Sharp Solid State Relay Repetitive Peak OFF-state Current At 25 C, the leakage current is 10-6 A, you need put dummy load resistor, 100k=105 ohm and voltage will be 0.1 V.

Okay I'll put the 100k resistor in the circuit. Thanks

Okay...that didn't seem to work. Now across the relay contacts there is 120V when the connection is supposed to be open, I assume this is the voltage flowing through the resistor. I just want the relay to be like a light switch: either on or off. But 0.1v would be okay I think..? Is there any real …

Solid State relays have leakage. If you want to repeatedly switch something on / off, use them. But when you want the SSR to be fully off, say after pressing an off switch, a mechanical relay should be across the load to take it off the SSR. If you aren't switching repeatedly, then use a mechanica…

Well I do only need to switch the relay on an off once per day, so maybe the SSR isn't needed. I can't draw the schematic now but I can try to describe it. The SSR control is attached to the atmega328 through a 200ohm resistor. I believe that part is correct. Then one of the load pins is attached t…

100k resistor connect between switched load pin and other leg of the 120V, It is dummy load. or you could connect one 120 v lamp as load to test.

Solid State Relay Leakage?

Other Hardware Motors, Mechanics, Power and CNC

phillips June 15, 2013, 4:23pm 3

I guess so...my only other option would be to use a normal relay? The SSR relay is going to be driving another 3 phase one, so will the 12V leak trigger it?

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Solid State Relay Leakage?

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