4. Telephonic communications
  5. Subscriber line or transmission line interface
  6. For line length compensation

Gerrit Rademaker

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DC power supply with electronically controlled power dissipation

Electric power conversion systems – Current conversion – With condition responsive means to control the output...
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Direct current telegraphy systems

Telegraphy – Systems – Automatic
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Electric direct current telegraphy transmitter

Telegraphy – Systems – Chemical
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Electronic relay arrangement

Telegraphy – Repeaters – Using transistors
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Opto-electrical signal converter with stabilization

Radiant energy – Photocells; circuits and apparatus – Signal isolator
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Profile ID: LFUS-PAI-P-280160

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