ELET 3132L - Lab #1

9. Now you can place the complementary parts – N channel MOSFETs. Use the same methods
to place two of the IRF530 N channel MOSFETs on the schematic. These four transistors are
all the parts needed for the logic gate. But as before you need to add a battery for power, two
signal generators and ground connections.
10. Choose Place→Parts again and select the SOURCE library. Add a battery by adding a VDC
part to the schematic. Left click twice on the 0VDC and change it to 5V. Add the signal
generators by adding two VPWL (Piece-Wise Linear) parts to the schematic. These are
tougher to setup as you will have to describe the signal you want as pieces of lines. Be
careful to setup the times and volts correctly. Left click twice on the top left signal generator.
You will see the property editor screen as shown below.
Figure 19: Property Editor Screen
11. Figure 20 shows a single line of properties for the part. Use the scroll bar at the bottom to
scroll far enough to the right to bring up the Time and Voltage slots as shown below:
Figure 20: Single Line of properties
12. Here is how to setup the signal generator. V1 is the voltage the generator will output at time
T1, V2 at T2, V3 at T3, etc. YOU MUST ADD UNITS – s for seconds and v for volts. Here
are the T’s and V’s to make a 500Hz square wave:
ELET 3132L Experiment #1 12 of 25