This document contains a circuit schematic for amplitude modulation. It shows a carrier signal generated by one voltage source being modulated by two lower frequency signals from other voltage sources. The output of the modulation circuit is measured over time, showing the amplitude of the output signal varying in accordance with the two modulating signals. Simulation data is included showing the output signal amplitude varying over time and with different input frequencies.

1. 5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
0V
0V
0V
0V
+VCC12.00V
-VCC
12.00V
+VCC12.00V
-VCC
4.800V
AMout
12.00V
12.00V
0V
0
0
Title
Size Document Number Rev
Date: Sheet o f
Schematic <RevCode>
Amplitude Modulation
A
1 1Thursday, February 06, 2014
Title
Size Document Number Rev
Date: Sheet o f
Schematic <RevCode>
Amplitude Modulation
A
1 1Thursday, February 06, 2014
Title
Size Document Number Rev
Date: Sheet o f
Schematic <RevCode>
Amplitude Modulation
A
1 1Thursday, February 06, 2014
USF
FREQ = 102k
VAMPL = 0.25
VOFF = 0
AC = 0
V5
12Vdc
V4
12Vdc
Carrier
FREQ = 100k
VAMPL = 1
VOFF = 0
AC = 0
R4
500
R3
1k
U2
LF411
+
3
-
2
V+
7
V-
4
OUT
6
B1
1
B2
5
R2
1k
R1
1k
LSF
FREQ = 98k
VAMPL = 0.25
VOFF = 0
AC = 0

2. Date/Time run: 02/06/14 23:49:50
** Profile: "SCHEMATIC1-Sim_Profile" [ F:LABORATORY COURSESOrCADAmplitude_Modulation-PSpiceFilesSCHEMATIC1...
Temperature: 27.0
Date: February 06, 2014 Page 1 Time: 23:51:07
(A) Sim_Profile.dat (active)
Time
0s 1ms 2ms 3ms 4ms 5ms 6ms 7ms 8ms 9ms 10ms
V(AMout)
-800mV
-400mV
0V
400mV
800mV

3. Date/Time run: 02/07/14 00:05:58
** Profile: "SCHEMATIC1-Sim_Profile" [ F:Laboratory CoursesOrCADamplitude_modulation-pspicefilesschematic1...
Temperature: 27.0
Date: February 07, 2014 Page 1 Time: 00:09:20
(A) Sim_Profile.dat (active)
Frequency
40.0KHz 60.0KHz 80.0KHz 100.0KHz 120.0KHz 140.0KHz 160.0KHz 180.0KHz
V(AMout)
0V
100mV
200mV
300mV
400mV
500mV