2 Consider high frequency model et common emitter amplifier (Chapter 10, p.30). Using PSpice analyse the loading effect caused by scope probe that has the following structure narrowing probe body apparent bandwidth gur touching scope amp input th S.Spf 50pf llur Shielded cable + input impedance of the scope 4) HIGH FREQUENCY Analysis (16NORE re For Simplicity) SHORT LARGE CAPACITORS 1.860 Rs www 10 w x Cu + + re R RL Vs + VO R TOLL Rz 5k Ver 2K G 52.8p 1.176 19.1K Ik 0.1534 Vol Nin 13 AGAIN - SOLVING FOR (4x4 matrik) Very TEDIOUS A IT possIBLE TO APPROXIM47 THE UPPER - 3 dB FREQUENCY THE ABOVE AMPLIFIER USING A TECHNIQUE * CALED THE "OPEN - CIRCUIT TIME CONS TAUTS (OCTC)." OCTC METHOD: TO APPROXIMATE THE -3dB FREQ. ful of No INN a) SET VN=0 6) FOR EACH Smacc CAPACITOR, Ci, FIND THE RESISTICE, Rio, LOOKING IN70 THE Teemid ALS with THE REMAINING SMALL CAPACITORS OPENED 1 1 c) Wy Zafn 2 Pioli 2 Toci 2 Consider high frequency model et common emitter amplifier (Chapter 10, p.30). Using PSpice analyse the loading effect caused by scope probe that has the following structure narrowing probe body apparent bandwidth gur touching scope amp input th S.Spf 50pf llur Shielded cable + input impedance of the scope 4) HIGH FREQUENCY Analysis (16NORE re For Simplicity) SHORT LARGE CAPACITORS 1.860 Rs www 10 w x Cu + + re R RL Vs + VO R TOLL Rz 5k Ver 2K G 52.8p 1.176 19.1K Ik 0.1534 Vol Nin 13 AGAIN - SOLVING FOR (4x4 matrik) Very TEDIOUS A IT possIBLE TO APPROXIM47 THE UPPER - 3 dB FREQUENCY THE ABOVE AMPLIFIER USING A TECHNIQUE * CALED THE "OPEN - CIRCUIT TIME CONS TAUTS (OCTC)." OCTC METHOD: TO APPROXIMATE THE -3dB FREQ. ful of No INN a) SET VN=0 6) FOR EACH Smacc CAPACITOR, Ci, FIND THE RESISTICE, Rio, LOOKING IN70 THE Teemid ALS with THE REMAINING SMALL CAPACITORS OPENED 1 1 c) Wy Zafn 2 Pioli 2 Toci