MODULATING/DEMODULATING SYSTEM FOR NON-CONTACTING COUPLING DEVICE

PURPOSE:To easily constitute the non-contacting coupling device of plural signal lines while reducing the number of transformers even in the case of using the plural signal lines. CONSTITUTION:The number of transformers is suppressed to one so as not to occupy a wide space, a frequency is multiplexe...

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Bibliographische Detailangaben
1. Verfasser:	KAWAKITA TATSUJIRO
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY MULTIPLEX COMMUNICATION TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	PURPOSE:To easily constitute the non-contacting coupling device of plural signal lines while reducing the number of transformers even in the case of using the plural signal lines. CONSTITUTION:The number of transformers is suppressed to one so as not to occupy a wide space, a frequency is multiplexed and separated by using filters 25 and 27 so as to enable the plural signals, the modulating system is also formed only as simplified AM modulation, and a resistor 501 for changing the input impedances of the filters and a switch 502 connected to the resistor are provided at the input or output terminals of the respective filters 25 and 27. By turning the switch 502 on/off, AM amplitude modulation is executed to a carrier.