Overload-proof supply circuit for small DC motors in dual quadrant mode, has complementary transistors in antiparallel configuration that is in series with motor

摘要

The circuit comprises complementary transistors (TH1,TH2) that are connected in an antiparallel configuration, which is in series with the motor (M/G). The arrangement prevent the armature's rated current from being exceeded in the event of an overload, and isolates the motor from other loads (La) in the generator mode.