Environmental Engineering Reference
In-Depth Information
From this point of view, the
ideal
series-shunt feedback amplifier is
illustrated in Fig. 6.26. It is implemented by the differential amplifier in non-
inverting configuration. Its transfer function is coincident with the
asymptotic term previously obtained in (6.11) given by
The
ideal
shunt-series feedback amplifier is illustrated in Fig. 6.27. It is
implemented with and ideal differential amplifier and a current-controlled
current source with a gain,
All the input current goes through the
feedback resistance,
and sets the differential amplifier output voltage.
The output current,
i
, provided by the differential amplifier is sensed and
delivered through the current-controlled generator at the load resistance. The
complete transfer function is
