TM 114625255-14/10 33A1-13-1701
is little departure from exact phase opposition be-
phase of the feedback voltage is governed by the
tween the feedback signal and the original input
bridge. More negative feedback exists in the
signal because of the combined action of the pre-
amplifier for the frequency being rejected, and the
amplifier and the bridge amplifier when the bridge
gain of the amplifier is less for this frequency than
is excluded from the circuit; therefore, the relative
for the remaining frequencies; therefore, through
Figure 6-4. Frequency rejection characteristics of bridge.
Figure 6-5. Frequency rejection of bridge when used with feedback amplifier.
Figure 6-6. Phase shift characteristics of bridge.