ENGR201 Lab 2018
Lab 1 Lab
equipment and edit your webpage for your lab report. Due
Sep 3, Monday 10 pm.
of this lab:
Be familiar with the lab equipment.
Can edit your webpage and report your lab results to the website.
function generator (FG) is running in the '50 ohm' mode, the
FG has a 50 ohm output impedance internally. The
displayed Vpp on the FG is only half of the signal that outputs.
You need to use a 50 ohm resistor to bridge the Positive and Negative
outputs of the FG to bring the out signal back to normal. This problem
can be ingored if you turn the FG into the 'HZ' mode.
The DC (direct current) Power
the following figure, you will find the power supply (voltage supply or
voltage source) in Fig. 1a, the 'Banana cable' in Fig. 1b, and the
connection between the cable and the power supply in Fig. 1c.
Fig. 1 The DC power supply
Remember we usually use the 'Red cable for the positive and the 'Black
cable' for the negative.
on the power supply, try to tune it to different voltage outputs by
directly press the buttons for the demanded voltage output or turning
the knob ot the top-left corner.
Press the button 'On\Off' to deliver/block the voltage to the output
multimeter has its own cables, do not mess it up. The cables are in
Fig. 2a, the multimeter is in Fig. 2b, the connections for voltage
measurement is in Fig. 2c, for current measurement is in Fig. 2d.
Always use the 'Red' one for positive and the 'Black' one for negative.
Fig. 2 The multimeter
3. The function
Fig. 3a shows the cable for the FG, Fig. 3b shows the FG, and Fig. 3c
shows the connection between the cable and the FG.
Fig.3 The function generator
as the power supply, if you don't press the 'on/off' button, the
voltage waveforms won't be delivered to the output terminal.
is the most complex equipment among these four, we will cover more
about it through the semester. Make sure you use the correct cable for
Fig. 4 The oscilloscope
(Take pictures of the
results use you smartphone for your lab report)
1. Build a circuit on a breadboard as follows:
Give Vin 5V, and mearsure Vout use the multimeter.
2. The same circuit, give Vin -5V, measure the Vout
use the multimeter.
Change the voltage supply to +-5V, and test the voltage at Vout use
Explain how the
following connection can provide +-5V to the circuit.
What is the current flow in this circuit? Use the multimeter to test
** Report your results (with figures and texts) on the website.
Follow the lab
to avoid losing points.