Circuit arrangement to improve the mode of operation of voice-operated switches
DE564971C
Circuit arrangement for connecting wireless transmission systems to two-wire connections
DE562746C
Circuit arrangement for controlling the transmission rate in transmission systems with two-way traffic
DE519738C
Circuit arrangement for controlling the transmission rate for intercom systems or for amplifiers in telephone lines
DE505911C
Circuit arrangement for telecommunication systems, in which the opposite direction is blocked by the telecommunication streams of one transmission direction
DE439412C
Switching arrangement for tube transmitter with grid direct current control
DE450555C
Switching arrangement for receivers and amplifiers with electron tubes for connection to high-voltage networks
DE402534C
Reception arrangement for interference clearance in wireless telegraphy
DE347823C
Method for keying tube transmitters for wireless telegraphy
DE343060C
Circuit arrangement of vacuum tubes for generating vibrations in wireless telegraphy
DE554475C
Circuit arrangement for controlling the transmission rate
DE559840C
Circuit arrangement for controlling the transmission rate in transmission systems
DE349978C
Arrangement for controlling an electrical machine by means of a vacuum tube
