1. Circuit Lab. Experiment-4 Measurement of Time Constant, Rise Time, Step Response of a RC Circuit

2. Quiz A(t)=A.e -t/a B(t)=B.(1-e -t/a ) –Draw the graphic of A(t) and B(t) signals. –For t=a calculate A(t) and B(t)

3. RC Circuit

4. Theory Time Constant  =RC Rise Tİme t r = (2.2)RC=(2.2) 

5. Measurement Setup-1 TTL SFG-2120 1 k  1  F GDS-1102 +5V 0V 10 Hz Rise Time=......... Time Constant=.........

6. Measurement Setup-2 TTL SFG-2120 10 k  1  F GDS-1102 +5V 0V 10 Hz Rise Time=......... Time Constant=.........

7. Measurement Setup-3 TTL SFG-2120 1 k  1  F GDS-1102 +5V 0V 10 Hz Rise Time= ? Time Constant=? 1 k 

8. Measurement Setup-4 TTL SFG-2120 1 k  1  F GDS-1102 +5V 0V 10 Hz Oscilloscope Screen ?

9. Final Setup 1 k  1  F +5V Measure DC voltage across the capacitor using UT33A autorange multimeter 1 k 

10. For a DC Voltage applied to capacitor with Vc(0)=0 initial condition; t  0+ Capacitor Voltage: 0 Capacitor Current: Max. (Short Circuit) (Capacitor Charging) t>>  Capacitor Voltage: Max. Capacitor Current: 0 (Open Circuit) (Capacitor Charged)