GDZG-300 yuruhererekane rwa DC rwinshi rwipimisha rurimo kugerageza DC yumubyigano mwinshi wa zinc oxyde ya zinc oxyde, gufata ibyuma bya magnetiki, insinga z'amashanyarazi, generator, transformateur, switch, nibindi bikoresho, bikwiranye nishami ryamashanyarazi, ishami ryingufu zinganda, ibice byubushakashatsi bwa siyansi, gari ya moshi, inganda z’imiti, amashanyarazi.