| 摘要 |
The signal receiver is intended to identify the end of a signal as soon as possible and on the other hand not to separate the signal in the event of signal interruption due to interference. For these purposes, a monostable trigger circuit (MK) is used whose self-holding period corresponds to the duration of the longest interference and the duration of at least one measurement which follows the main test once the presence of a signal has been identified; provided that the half-period results and preliminary test results are positive, a trigger signal is transmitted, with each zero passage of the AC input voltage, to the trigger circuit which is held thereby and which interrupts the signal receiver output signal only when it is released. <IMAGE> |
