Abstract: According to Ref. [1], four kinds of new magnet-sensitive solid-state transducers have been made with new elements （magnetic diode couple and magnetic transistor）. They are （1） single magnetic transistor transducer, （2） magnetic diode couple transducer, （3） magnetic diode and magnetic transistor combined transducer and （4） bridge circuit of double magnetic diode couple transducer. Their practical circuits are described in this paper. Their performances are determined experimentally and compared in the form of experimental curves and empirical formulas. These four transducers are superior to the transducers given in Ref. [4-7] in multifunction and universality, especially in the ability to measure very low speed.