| 摘要 |
<p>Programmable time delay apparatus includes a plurality of similar components (10) which determine the total time delay of the apparatus. These components have gate units (310-31n, 320-32n, 330-33n, 340-34n) coupled thereto which, in response to a control signal (b0-bn) applied to each component, either electrically couples the component to the apparatus or electrically removes of the component from the apparatus. In a first embodiment, the control signals (b0-bn) place time delay components (10) in a series configuration, the total time delay being the sum of the time delays of each series-coupled component (10). In the second and third embodiment, the resistors (470-47n) and the capacitors (530-53n), respectively, are coupled in a capacitance charging circuit (470-47n, 43; 52, 530-53n), the coupled elements controlling the charging rate and, consequently, the time delay of the apparatus. By coupling the apparatus in a ring configuration (Fig. 6), a counter unit (63), counting the number of signal delays through the delay apparatus (61) can lengthen the programmed time delay. <IMAGE></p> |
