| 摘要 |
The control device comprises two power supply terminals and a local control terminal connected by a local control means to one of the power supply terminals. A control circuit receives on a first input a first full-wave rectified voltage representative of the supply voltage, and on a second input a second half-wave rectified voltage representative of the voltage applied to the local control terminal. To eliminate spurious orders, it compares a quantity G1 representative of at least one non-null sample of the second voltage to a percentage of a quantity G2 representative of associated samples of the first voltage, sampling of the two voltages being almost simultaneous. If G1>=0.8G2, the device considers that a control order has been received and if G1 <=0.7G2, that no order has been received.
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