Transformer of producing tiny voltage

The utility model relates to a transformer of producing tiny voltage, which is characterized in that loops are arranged in a sealed magnetic conductive casing body, a center column of the magnetic conductive casing body is extended through the center of the loops, and thus magnetic force lines produced by input current are encircled on the exterior margin of the entire loops with a homogeneous distribution. So according to circumference proportion formed by the loops which are wound on the periphery of the core column, the proportion of all magnetic force lines which are passed through the core column and cut by the loops is calculated, and thus the output value of the tiny voltage arranged on leads which are pulled out by the loops at different positions can be obtained.