Abstract :
Especially adapted for servo systems with inductive actuators, the MCA and MCB units are a family of hybrid class-D power amplifiers. These amplifiers use switching techniques to implement the pulse-width-modulation operation. The MCA and MCB 1000 types employ a complementary output stage and planar output transistors. The circuits operate from a dual unregulated power supply (to ± 40 volts). The new MCA/MCB 2000 amplifiers with an external inhibit point (see Fig. 3) will replace the existing series.