Device for the load-dependent switching on and off of n parallel-connected rectifiers

摘要

The invention relates to a device for the load-dependent switching on and off of n parallel rectifiers. In devices of this type, optimum utilisation of the efficiency of each rectifier is intended to be achieved with a component cost which is as low as possible. To this end, the invention provides that each rectifier (G) contains a control circuit (ST) which consists of a read-only memory (A2) of a gate circuit (A31) and of comparators (A32) connected thereto, a threshold value being selected via the programmed read-only memory (A2) and the connected gate circuit (A31) from a number of comparators (A32) which respond to specific threshold values. The threshold values of each comparator are predetermined as a function of the number of rectifiers (G) in use, a specific comparator emitting a control pulse, via the gate circuit (A32), for the control circuit (St) of the respectively subsequent rectifier (G), depending on the number of rectifiers (G) which are in use. <IMAGE>