Jørn Nielsen has developed several controls with digital reading of sensors, which can read the temperature of a solar collector as well as the liquid content of the temperature of...view moreJørn Nielsen has developed several controls with digital reading of sensors, which can read the temperature of a solar collector as well as the liquid content of the temperature of the tank both at the bottom and at the top.
During a 10-year period when Jørn lived in the Philippines, in 2006 he helped develop a 2 volt solar panel of approximately 30 watts.view less