This invention is basically relates to a light weight paraboloid solar concentrator of a specific desigh. An improved solar concentrator comprising a parabolid shaped structure having excellent inner reflectivity, said paroboloid structure being so fitted to a A shaped frame that centre of gravity of said paraboloid...

This invention relates to a lead acid battery conditioner and particularly a pulse charger useful for conditionming lead acid batteries. The object of invention is to prevent sulfation in the lead acid battery. The present invention provides a lead acid battery conditioner comprising an electronic switching circuit,...