| 摘要 |
<p>System for power supply to and switching of a number of electrical appliances connected to a power source. Each electrical appliance is provided with a switching part, which is connected to a common signal line, to which are further connected a clock pulse generator and a number of signal transmitters, each of which corresponds with the switching part of a particular appliance. When a signal transmitter is activated, a control signal characteristic to the corresponding switching part is generated by extending up to the next clock pulse a number of clock pulses in a combination characterizing the control signal. The switching part addressed by the characteristic control signal then switches its particular electrical appliance; the switching parts of the other appliances are not activated by the signal. The address is determined by selective grounding in the same combination of a number of address contacts in the switching part and the associated signal transmitter.</p> |
