| 摘要 |
<p>In a control circuit for igniting thyristors and reporting back thereon, which is controlled by a pulse-control telegram containing double and single pulses produced in a central system control, the double pulse initiates the ignition phase and the single pulses initiate individual monitoring and measuring phases of the thyristor. The pulses of the pulsecontrol telegram are passed to a first AND- element and to a monostable flip-flop. The output pulses therefrom actuate a second AND-element and a further input to the first AND-element. The output signals therefrom set the control counter to the ignition position. A signal, released by the control counter in its last position, is passed to a third AND-element and, inverted, to a further input to the second AND-element. The output signals therefrom actuate the timing input to the control counter. The inverted output pulses from the flip-flop are passed to a further input to the third AND-element, the output signals from which constitute the report for igniting the thyristor.</p> |
