| 摘要 |
<p>A process for varying the load on a power supply system by injecting signals into the system using an audio frequency signal generator in which the time interval between the signals is reduced to reduce the load on the system and increased to increase it. The current meter assesses the electric power taken from the system, taking account of the distance between these signals. The prevailing power cost rates are displayed on indicators and electrical devices are automatically switched on when the rates drop below a preselectable threshold.</p> |
