- Joined Jul 19, 2020
I am trying to create an automatic solar powered water pump. The system will be battery powered so that the battery will be charged by a solar panel during the day and when the sun goes down, the battery will power a water pump. I thought about taking the circuit from a solar light which already does what I want but I will need 2-6A of current and 12V which will probably be two high for an existing circuit. Can I use Darlington transistors to allow the existing circuit to control the higher current circuit or is there a standard controller circuit available?