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Villanueva, Jason Paul L. Rating BS ECE - 3A NOVEMBER 17, 2017 Seatwork No. L GENERAL AMPLIFIER CONCEPTS Froblem 1 Resume that an amplifier circuit ts matched at both input and output 5 that 1s, the source internal resistance, Is cqual fo the input regstonce, and the load resistance \s equal to the output resetonce . E yptese the loaded Voltage Gain Avs in terms Of Unloaded Voltage. gan A. Solution - Avs: /_Ri_ \ (Ay) (/ Z [ it A ; = | fF Ri<= Zo and Bs=Z, Then 4 fuss ft (Awa) / Z ) fet y 242 Avs = V fsi(a)™ | Avs - tL Avan 4 Roblem 2 A cectan, amplifier With an adjustable gain A ts tobe placed between a SOOM resishye soce ard a Zk 1 residwe load. The Input ond output impedances of the omplifier are |.Ok{L and 2001 Repechutly he on arcurt source voltage is 5OmY, and tt ts desired 1 establish 4V aces the ‘Dad Deermne the required Value of A. Soluton a. 7 Rs« 5S00L Zo * 500 V, = ay n Vs sDuy™) Z- 5k = Avan?” Riz Zen Avs */ Pe \ (Ava) / _Z. \ i R.+ Zo | | | Re + Z) } NL / Zen \ Ave }/ L5kL FOmV 2k + 500n l6ka> Don 15k0+ Don 
