Figure 6-6. Phase shift characteristics of bridge.

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.

6-6