PLEASE SOLVE THE SECOND NUMBER 2 CALLED H-BRIDGE DRIVER. SOLVE IN LTSPICE AND SHOW ALL CALCULATIONS PLEASE

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PLEASE SOLVE THE SECOND NUMBER 2 CALLED H-BRIDGE DRIVER. SOLVE
IN LTSPICE AND SHOW ALL CALCULATIONS PLEASE

Please Solve The Second Number 2 Called H Bridge Driver Solve In Ltspice And Show All Calculations Please 1 (173.24 KiB) Viewed 8 times

1. Signal Generation a. In PSpice, pick LM324 or uA741 (for U1 - U3 op-amps), construct the circuit in Figure 1. Use dual power supply of V+=+9 V for the op-amps, Rref_1 and Rref_2. b. Start with the values in Table 1, simulate the transient response of the circuit. (You define the transient time duration for appropriate cycles of waveforms.) c. Compare the voltage at the output node of each stage (V1, V2 and Vin). d. Based on your observation of the waveforms at each stage, identify and discuss the function of each block in the circuit. e. Modify Ry or C, observe how the frequency of the response changes. f. Change Rref_1, check how Vin changes accordingly. g. Draw conclusions on the functions of the overall circuit and individual blocks. R2 R w V+ C C R Rota JU w RI V1 U2 V2 w R Ret 1 oy. Figure 1. A circuit to generate Vin. (Here Vin means the input to the next stage of power amplifier.) You may start with the following parameters for the circuit. EEER Parameters R R2 R3 R4 Values 10 k 10 k 100 k 100 k 200 k Parameters Reef 1 Rref 2 С C2 V+, V-for op-amps and voltage divider Values 10 k 20 k 1.0 uF 10 nF +9V
a. 2. Power Driving Circuit 1) Single transistor driver Connect the circuit in Figure 1 to the single MOSFET in Fig. 2. Choose IRF150 for the NMOSFET. Set R= 10 k12, RLoad = 10 12. You may include a LED as part of RLoad to visualize the effect. b. Repeat the transient simulation in last section. Observe the voltage across the load resistor RLoad (i.e. V+- Vload) and the current passing it. c. Derive the power consumption by RLoad. Find the relation of the power consumption and the duty cycle of Vin d. If Rload is a DC motor, what will be changed with a vin in Fig. 1 that has a changing duty cycle? Comment on the connection and the result. e. Rload o Vload . Vid RS Figure 2. Powering load using a single N-MOSFET.
a. c. 2) H-Bridge driver Construct the circuit in Figure 3. Set Vpp = 9 V. In PSpice Student, use IRF150 for NMOSFETs (M_N1-3) and IRF9140 for PMOSFETs (M_P1-3). You may choose R = 10 k12. b. Set Vin as 9 V and 0 V, respectively, check the voltage across Ru, i.e., V.2-1._1. Identify the direction of current passing Rz. (You may use a pulse voltage source as Vin.) Connect the two circuits (Figure 1 and Figure 3) together. Perform transient analysis as done in Section 1. Check the current passing Rz. (Due to the nodes limit in PSpice Student, you may need to use LTSpice for this complete simulation.) d. Change the value of R2 or C, observe how it affects Vo_1, V. 2 and the current passing Ry. e. With certain Rz and C, change Rref_1, observe how Vo_1, V. 2 and Iru change accordingly. Record the waveforms (V2 = V2 - V., and Irl) of two settings of Ref 1. Calculate the power dissipated by R. VOD M_P2 M_P1 Vo 9 Vo RL w L MP3 Vin MN2 MNI M N3 R$ Figure 3. A generic H-bridge circuit. The inverter consisted of M_P3 and M_N3 can be small signal transistors such as those in a CD4007 chip that was used in previous labs. Other MOSFETs should be power transistors to handle the desired current and power. 3. Additional questions to be answered: a. In the first stage of the circuit in Figure 1, it takes some time to get a stabilized output. Explain the reason. b. Find possible applications of cascaded circuits that consists of that is in Fig. 1 and Fig. 2, or Fig. 1 and Fig. 3. c. Discuss possible issues in application of the H-Bridge. a) What would happen if Vpp is different from the amplitude of Vin in Figure 3? b) What if the driving voltages at both branches of the H-Bridge have non-zero overlap value? c) What measures should be taken to power a motor using the circuit? d. Make any necessary comments you may have from the simulations and observations.