EET 11 IL – AC Analysis Lab Assignment 1 Resistive Circuits Solved

Description

Objective: To demonstrate that the circuit analysis techniques used for DC resistive circuits also work for AC resistive circuits.

1. Select a 1 kΩ resistor and a 470 Ω resistor, to be designated RI and R2 respectively. Use the DMM to measure the actual resistance of these two resistors, and record their values below.

R₁ =____________________________, R₂ = _____________________________

2. For the circuit shown in Figure 1, use the measured values of the two resistances to calculate total resistance R_T, the current I, and the voltage drops across the two resistors, VR₁ and VR₂ and record below.

Figure1

R_T=_________________, I =_____________, V_R1 =_____________,V_R2=_______________

3. Construct the circuit of Figure 1, and use the DMM to measure the current and the voltage across each resistor, and record below.

I =_____________, V_R1 =_____________, V_R2=_______________

4. Replace the DC supply with the function generator, set at 5 V _rms and 10 kHz with Hi Z output, repeat the measurements of Step 3, and record below.

I =_____________, V_R1 =_____________, V_R2=_______________ (rms all)

5. Observe the voltage drops across each resistor using the DMM. What are their peak values?

V_R1 =_____________, V_R2=_______________(peak)

6. For the circuit shown in Figure 2, use the measured values of the two resistances to calculate total resistance R_T, the supply current I_s, the currents through the two resistors, I₁ and I₂, and the voltage drops across the two resistors, V_RI and V_R2, and record below.

Figure 2

Calculations:

R_T =_________________ , I_S  = _________________ , I₁ = _______________, I₂ =___________________

V_R1 =____________________, V_R2 = ___________________

7. Construct the circuit of Figure 2, and use the DMM to measure the supply current, the currents through each resistor, and the voltage across each resistor. and record below.

I_S = _________________, I₁ = _______________, I₂ =___________________

V_R1 =____________________, V_R2 = ___________________

8. Replace the DC supply with the function generator, Set at 5 V_rms and 10 kHz with Hi Z output, repeat the measurements of Step 3 , and record below.

I_S = _________________, I₁ = _______________, I₂ =___________________

V_R1 =____________________, V_R2 = _________________ __ (rms all)

9. Observe the voltage drops across each resistor using the DMM. What are their peak values?

V_R1 =____________________, V_R2 = _________________ (peak)

Do your results With the AC supply (function generator) agree With your DC results? Do they

with your calculated values?