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US4514840A
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Data transmission systems for full duplex communication
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DE3218022A1
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Optical device for multiplexing
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DE3138650A1
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METHOD FOR MONITORING A RADIO RECEIVING SYSTEM
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DE3138649A1
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METHOD AND CIRCUIT FOR SUPPLYING A SUBSCRIBER DEVICE
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DE3136696A1
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Oscillator circuit
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DE3136223A1
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Integratable audio-frequency detector
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DE3135854A1
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Amplifier stage with field-effect transistor
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DE3133745A1
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Mixing stage
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DE3133347A1
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METHOD FOR ACCESSING TRANSMISSION CHANNELS OF A MESSAGE TRANSMISSION SYSTEM
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DE3133345A1
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Digital frequency identification circuit
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DE3132199A1
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Method and circuit arrangement for transmitting data signals using the time division multiplexing method
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DE3132198A1
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Method and circuit arrangement for synchronising data signals
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DE3131956A1
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Switching stage
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DE3131272A1
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Pulsed electrical power supply with a starting circuit
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DE3130546C1
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Operation of EAROM ensuring equal loading of elements or cells - cyclically transferring data between locations to increase operational life
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DE3130571A1
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CIRCUIT ARRANGEMENT FOR A POWER SUPPLY DEVICE
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DE3130263C1
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Transistor switch with high switching rate
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DE3127100A1
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Time delay switch
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DE3126894A1
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Circuit arrangement for bit error correction
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DE3124328A1
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Variable active equaliser
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