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R.C Coupled Amplifier The below fig shows a two stage R.C coupled amplifier. Here the first stage is connected to the second stage through the coupling capacitor C C and resistor R C . Therefore, this amplifier is called as RC coupled amplifier. The resistor R 1 , R 2 from the self bias and R E form stabilization network. The emitter bypass capacitor offers low reactance path to the signal. This method of coupling is widely used in cascade amplifier stages. Working: When the input voltage is applied to the base of the first transistor through a input capacitor C IN , it appearing the amplified form across its collector load R C . The output of the first stage is given to the vase of the next stage through coupling capacitor C C . The second stage does further amplification of the signal. The coupling capacitor here, helps in blocking the flow of d.c. components from first stage to the second stage. Thus the biasing of the second stage will not disturbed. The coupling capacitor have so...

The following couple of circuit diagrams provide a glimpse of the configuration for making a precision rectifier and direct coupled power source circuits.  Precission Rectifier circuit diagram. Direct Coupled Power Circuit Diagram CMOS Power Booster Circuit Diagram The MC1556 operational amplifier way be used as a voltage follower ln a hid; amplifier application. The high input impedance avoids loading effects on the bridge and transforms the impedance down to a level where a third amplifier used in a differential mode can provide voltage gain, ll) in this case. The third amplifier employs the standard offset adjust circuit to provide nulling capability for the configuration. Although the circuit is shown for complementary supply voltages, , it lends itself well to operation from a single supply since the bridge can be operated iust as well from the single supply. One must, however,,provide for biasing the nowgrounded 100 kS2 resistor to half the supply voltage using a simple resis...