| 摘要 |
Process for transferring power and information on one or more common lines (4, F1, F2) obviating known drawbacks, such as elimination known per se of one or more complete half waves of an alternating supply current leads to a noticeable reduction in the power transferred, and that in this known process no information can be transmitted in a direction towards the supply current. The process is characterized in that a first type of information where the rate of transmission depends upon the frequency of the current supply, is transmitted by essentially cutting off the current connection (e.g. by means of the converter 9, fig. 1) to the supply source in periods (T4-T5, fig. 2A) which constitute a fraction of a half wave interval, and that a second type of information which is not dependent upon the frequency of the current supply, is transmitted during the periods in which the current connection to the supply source is essentially cut off. |
