| 摘要 |
1508249 Adjustable equalizers TEKADE FELTEN & GUILLEAUME FERNMELDEANLAGEN GmbH 20 July 1976 [26 July 1975] 30108/76 Heading H3U An adjustable equalizer comprises an input transformer T1 having a winding across which is connected a voltage divider R o , R, the winding being tapped at 2 so that W 1 /W 2 =R o /R, and a plurality of adjustable elements each comprising a resistor R x , an inductor L x , and a differential capacitor C x , first stators of the differential capacitors being connected to a first winding of a differential transformer T2, and second stators of the differential capacitors being connected to a second winding of T2, the differential transformer being connected between tapping 2 and the junction of resistors R o , R. Groups of adjustable elements may be interconnected by means of hybrid circuits (Figs. 2, 3, not shown). |
