Device for the optical measurement of value in defined spectral areas of any light sources
DD240087A1
Circuit arrangement for a microprogram control system
DD225232A1
Circuit arrangement for monitoring an alternating voltage
DD223412A1
Circuit arrangement for loading saved roads and signal positioning in track planning works
DD223415A1
Circuit arrangement for loading stored roads including total loading and signal positioning in track planning works
DD224458A1
Method and circuit for monitoring earthed safety circuits with voltage-confined cable loads
DD218594A1
Method and arrangement for evaluating axis pulses in axle equipment
DE1924851A1
Contact bridge arrangement for relay
DE1512624A1
Electronic term element
DE1405726A1
Circuit arrangement to maintain the blocking in the event of a temporary interruption of the axle short-circuit and a stopping block signal in the direction of travel in the case of an automatic section block with track circuits
