Solar Hot water system (thanks to forum, Warpspeed and others)

Author	Message
KeepIS Guru Joined: 13/10/2014 Location: Australia Posts: 2234	Posted: 05:31am 07 Jun 2025       That 4700µf is made up of scrapped electrolytic caps from old Gridtie inverters from scrap merchants of other sources. Why not test your idea with a single panel and a resistive load with temp sensor. Keeping in mind that this controller works due to the nature of an insulated water tank retaining most of the power pulse as heat as the water temperature slowly rises with each pulse. Very fast PWM frequency will likely mean using a tank temperature sensor to cut the PWM off. Cheers.