LORUS (5 PONTS) The LED in the following circuit requires 30 mA to emit a sufficient level of light. For the following circuit values: Vcc=15 V, Vce (sav) = 0.2 V. Boc=50 and VLED = 2.2 V, Rc= 330 32 and RB = 3.3 ks2. a) Determine the amplitude of the square wave input voltage necessary to make sure that the transistor saturates. Use an increase by 50% in the minimum value of base current as a safety margin to ensure saturation. b) If you change the LED in the circuit to one that requires 50 mA for a specified light emission. Find the new value of Rc that is needed for the proper operation of the circuit. (Assume that all the other circuit values are the same as in part a except the value of Rc) +Vec Re ON ON R w Is-- OPT LORUS (5 PONTS) The LED in the following circuit requires 30 mA to emit a sufficient level of light. For the following circuit values: Vcc=15 V, Vce (sav) = 0.2 V. Boc=50 and VLED = 2.2 V, Rc= 330 32 and RB = 3.3 ks2. a) Determine the amplitude of the square wave input voltage necessary to make sure that the transistor saturates. Use an increase by 50% in the minimum value of base current as a safety margin to ensure saturation. b) If you change the LED in the circuit to one that requires 50 mA for a specified light emission. Find the new value of Rc that is needed for the proper operation of the circuit. (Assume that all the other circuit values are the same as in part a except the value of Rc) +Vec Re ON ON R w Is-- OPT