hi please answer this. please share the clear screenshots . 1. Simulation of transformers (10 marks) In this exercise yo
Posted: Tue Apr 26, 2022 1:58 pm
hi please answer this. please share the clear screenshots .
1. Simulation of transformers (10 marks)
In this exercise you will use LTspice
to simulate a central-tap transformer. To define the value of
inductors, use the relationship between turns ratio and
inductances:
ππ ππ πΌπ βπΏπ
= = =
ππ ππ πΌπ βπΏπ
Where:
NP=
Number of turns in the primary coil of the transformer.
NS=
Number of turns in the secondary coil.
LP=
Inductance of the primary coil.
LS=
Inductance of the secondary coil(s).
VP=
Voltage in the primary
VS=
Voltage in the secondary
IP=
Current circulating in the primary coil. IS= Current
induced in the secondary coil.
This means that to obtain a
transformer ratio of 10:1; i.e. the primary coil has 10 times more
coils than the secondary, and the output will be 10 times lower
than the input (step-down transformer); we could use a 100 mH coil
in the primary and a 1 mH coil in the secondary. Any combination
with the primary having 100 times more inductance than the
secondary would work.
In the following exercises, power
should be supplied by an AC voltage power supply
delivering 240 Vpeakat
50Hz. The power supply must have a
very small internal resistance (Rser=0.0001 Ξ©), otherwise the
simulation does not work because the primary of the transformer is
interpreted as a short circuit.
Create an LTspice schematic file to
simulate the circuit shown in Figure 1. The Output voltage (Vout1
and Vout 2) should be 12 Vpeak AC with respect to
the central tap. Note that the input ground is not the same as the
output ground. They should not be
connected.
1a. Calculation of
inductances. (4 marks)
To complete the circuit in Figure 1,
you need to calculate the value of the inductors using the formula
shown in the previous page. Select
in Blackboard a combination of values
that will produce the desired output voltages.
1b. Screenshots of schematic
and simulations. (2 marks)
Bring screenshots of your schematic
diagram and simulation of the circuit in Figure 1 to
the laboratory for marking. Use three plot panes to
show your simulation results. Show Vp in one pane, and Vout1 and
Vout2 in separate plot panes. Use a friendly colour scheme in all
your schematics and simulations.
Schematic (1 mark)
Simulation (1 mark).
Use three plot panes to show your simulations.
HINT: Be careful
with the orientation of inductors, indicated by the little dot
(positive side).
KL1 L2 L31 Vin Vout 1 Vin L1 + R1 Ψ§Ψ― 1k COL3 SINE(O 240 50 0 0 0 10) Rser=.0001 tran 0.05 R2 1k Vout2 Figure 1. Circuit to simulate a central-tap transformer.
1. Simulation of transformers (10 marks)
In this exercise you will use LTspice
to simulate a central-tap transformer. To define the value of
inductors, use the relationship between turns ratio and
inductances:
ππ ππ πΌπ βπΏπ
= = =
ππ ππ πΌπ βπΏπ
Where:
NP=
Number of turns in the primary coil of the transformer.
NS=
Number of turns in the secondary coil.
LP=
Inductance of the primary coil.
LS=
Inductance of the secondary coil(s).
VP=
Voltage in the primary
VS=
Voltage in the secondary
IP=
Current circulating in the primary coil. IS= Current
induced in the secondary coil.
This means that to obtain a
transformer ratio of 10:1; i.e. the primary coil has 10 times more
coils than the secondary, and the output will be 10 times lower
than the input (step-down transformer); we could use a 100 mH coil
in the primary and a 1 mH coil in the secondary. Any combination
with the primary having 100 times more inductance than the
secondary would work.
In the following exercises, power
should be supplied by an AC voltage power supply
delivering 240 Vpeakat
50Hz. The power supply must have a
very small internal resistance (Rser=0.0001 Ξ©), otherwise the
simulation does not work because the primary of the transformer is
interpreted as a short circuit.
Create an LTspice schematic file to
simulate the circuit shown in Figure 1. The Output voltage (Vout1
and Vout 2) should be 12 Vpeak AC with respect to
the central tap. Note that the input ground is not the same as the
output ground. They should not be
connected.
- Hi Please Answer This Please Share The Clear Screenshots 1 Simulation Of Transformers 10 Marks In This Exercise Yo 1 (41.08 KiB) Viewed 40 times
inductances. (4 marks)
To complete the circuit in Figure 1,
you need to calculate the value of the inductors using the formula
shown in the previous page. Select
in Blackboard a combination of values
that will produce the desired output voltages.
1b. Screenshots of schematic
and simulations. (2 marks)
Bring screenshots of your schematic
diagram and simulation of the circuit in Figure 1 to
the laboratory for marking. Use three plot panes to
show your simulation results. Show Vp in one pane, and Vout1 and
Vout2 in separate plot panes. Use a friendly colour scheme in all
your schematics and simulations.
Schematic (1 mark)
Simulation (1 mark).
Use three plot panes to show your simulations.
HINT: Be careful
with the orientation of inductors, indicated by the little dot
(positive side).
KL1 L2 L31 Vin Vout 1 Vin L1 + R1 Ψ§Ψ― 1k COL3 SINE(O 240 50 0 0 0 10) Rser=.0001 tran 0.05 R2 1k Vout2 Figure 1. Circuit to simulate a central-tap transformer.