A simple demonstration of a dynamo model mounted on a wooden base of size 200 x 170mm length x width. It is hand-driven by a gear. Simplified open frame construction which can be readily understood without detriment to its essential similarity to real machine. A two pole armature wound by enamelled copper wire to rotate in ‘U’ shape magnet on pivot, while in rotation process through gear wheel by hand-bulb provided  glows.