Hi guys,
I am learning about electronics. I am making a 12 volt battery switching devise. I am using a 40 amp 24 - 240 dc volts output, 5-32 dc volts input solid state relay, mounted on a heatsink. Standard square type with two locking screws.
My concern is my understanding of how these SSR work, as they are mosfet output. If I connect two 12 volt lead acid batteries in series, with a control volage on the input, the SSR operates as is expected. It switches and I get 24 volts across the batteries.
However, if I decide to connect the batteries in parallel, I get a constant connection with either the positive or negative terminals if I use the SSR to switch the same terminals on or off. Therefore, by my understanding, the mosfets should not be open when there is no control voltage at the input, but the connection is closed. How can this be?
Regards,
I am learning about electronics. I am making a 12 volt battery switching devise. I am using a 40 amp 24 - 240 dc volts output, 5-32 dc volts input solid state relay, mounted on a heatsink. Standard square type with two locking screws.
My concern is my understanding of how these SSR work, as they are mosfet output. If I connect two 12 volt lead acid batteries in series, with a control volage on the input, the SSR operates as is expected. It switches and I get 24 volts across the batteries.
However, if I decide to connect the batteries in parallel, I get a constant connection with either the positive or negative terminals if I use the SSR to switch the same terminals on or off. Therefore, by my understanding, the mosfets should not be open when there is no control voltage at the input, but the connection is closed. How can this be?
Regards,