Introduction:
LTspice
is a circuit simulation software that allows for a
variety of circuit design inputs. LT spice can accept .txt files coded
in SPICE, which is the only way to design circuits, that can be read by
LTspice, outside of the main program. LTspice has two other internal
methods of designing circuits, one using the OP menu and the other
using a graphical schematic. The lab follows the design of multiple
circuits using the .txt method.
Materials and Methods:
The circuit shown in Figure 1 is coded
into a text file using
SPICE. LTspice is then used to simulate the circuit and calculate the
voltages and currents in the circuit (Table 1). The circuit shown in
Figure 1 is built on a bread board; the voltages at each node and the
current across each resistor is measured using a multimeter. The
circuit in Figure 3 is simulated in LTspice; the voltage at each node
and current through each resistor is calculated. The circuit in Figure
4 is simulated in LTspice; the voltage at each node and current through
each resistor is calculated. The circuit in Figure 5 is simulated in
LTspice; the voltage at each node and current through each resistor is
calculated.
Results:
Figure 1: Circuit for Task 1
Figure 2: Voltage and Currents
Table 1: Voltages and Currents
Table1: Voltage is measured at nodes
1, 2, 3, and 4 respectively. Current is
measured across resistors 1, 2, 3, 4 and 5 respectively.
Table 2: Time Delay and Amplitude Attenuation
Figure 3: Vin and Vout for Task 2
Figure 4: Vin and Vout for Task 3
Figure 5: Vin and Vout for Task 4
Figure 6: Vin and Vout for Task 5
Discussion:
No notes were made during this lab
