Consider the circuit obtained from that by lifting the right plate of C3 off ground and inserting a 220-V series resistance between that plate and ground. Draw the modifi ed circuit, and convince...

Consider the circuit obtained from that by lifting the right plate of C3 off ground and inserting a 220-V series resistance between that plate and ground. Draw the modifi ed circuit, and convince yourself that this modifi cation turns the circuit into a CE-ED amplifi er with a net emitter-degeneration resistance of (8200//220) V. Then, assuming F 5 125, VEB(on) 5 0.7 V, and VA 5 `, fi nd the small-signal parameters Ri , Ro, and voyvsig.