| 摘要 |
<p>A circuit, for producing direct voltages, for example the tuning voltages for a television or radio receiver, lying within a direct voltage range from pulses fed to an integrating circuit at whose output the direct voltages appear. A plurality of pulses (I) are fed to the integrating circuit, at whose output the direct voltage (UI) appears, within a period duration (T) assigned to the desired direct voltage range, with the period duration (T) being at least of the magnitude T = (Umax - Umin) x DELTA tau / DELTA UI, where (Umax - Umin) is the desired direct voltage range, DELTA tau is the shortest time duration of a pulse (I) and DELTA UI is the smallest voltage step width associated with the shortest pulse duration DELTA tau by which two different direct voltages (UI) at least differ from one another.</p> |
