Page 261 - Op Amps Design, Applications, and Troubleshooting

Band Reject Filter 243

FIGURE 5.18 A twin-T band-reject filter designed for a center fre-
quency of 5500 hertz.

FIGURE 5.19 Oscilloscope displays showing the performance of the twin-T filter shown in Figure
5.18. {Test equipment courtesy of Hewlett-Packard Company.) (continued}