| 摘要 |
Ripple control receiver for initiating switch effects on the basis of ripple control signals which are superimposed on the mains AC voltage, which on the one hand is provided with at least one narrowband frequency filter, which is tuned to the ripple control frequency and contains an auxiliary generator for producing a periodic selection signal at the same frequency as the ripple control signal, and on the other hand is provided with a logic linking circuit 2, 9 which mixes the received ripple control signal with the selection signal and whose output signal is supplied to a low-pass filter 6 which is used for integration and whose output variable is supplied to an evaluation circuit 7 which produces the switch effect. A sine-value store 3, 4, which is driven by a clock generator 4, is used as the auxiliary generator for producing a discontinuous selection signal which, averaged over time, simulates an approximate sign- wave function, from which, together with the received ripple control signal, a product signal which is supplied to the low-pass filter 6 is formed by means of the logic linking circuit 2, 9. <IMAGE> |
