Circuit arrangement of railway vehicle traction drives with dynamic electric resistor braking, combined with dynamic electric regenerative braking and voltage amplifier

A serial assembly, composed of input inductivity (3), standby brake resistance (4) and an electronic switching element (5), is integrated between the first supply voltage terminal (2) and second supply voltage terminal. The first diode (6) is connected between the electronic switching element (5) and standby brake resistance (4), poled in the forward direction for current from the supply network with a supply current filtration condenser (1), connected by its other pole to the second supply voltage terminal (1), at its output. A serial assembly, made up of a second diode (8) poled in the back current direction, or switching element (12) with back current characteristics and recuperative resistance (9), is connected to the shared point of the first diode (6) and filtration condenser (7). A switch (10) is connected between the shared point of input inductivity (3) and standby brake resistance (4) and shared point of the second diode (8) and filtration condenser (7).