6.002 Demo# 18 ( Load Set up demo#18.set )
Energy and Power in RC Network
Agarwal Fall 00
Lectures 22 (also reviewed in lecture 23)
Description: To show power consumption using MOSFET and RC Network.
Starting with a frequency approximately 300 HZ square wave and the S1 on the card should be on
and monitor the ammeter read out. As the frequency goes up the ammeter reading goes up, as the
Frequency goes down the ammeter goes down linearly. If the S1 on the card is on off position the
output remains the same regardless of any change in frequency.
See schematic diagram next page for more detail
[For this demo we need two cameras with a video switcher and light to show to ammeter read out.]
Oscilloscope Setup
CH
V/DIV
OFFSET MODE FUNC
1 on
2
-3.5
DC
2 on
5
14
DC
off
4 off
DC
off
AUTO AUTO
Waveform Generator Setup
UNIT
WAVE
FG1 Square
•
AMP
4
OFFSET
660 mV *
HORIZONTAL
off
DC
Acquisition:
VERTICAL
off
3 off
Horizontal: 1 ms
MATH
4
Trigger:
CH1
Power Supply Setup
FREQ
300 HZ *
+6
+25
-25
off
+15
off
OUTPUT
Trigger: INT
note if you set offset below 450 mV the output signal will be noisy. It has to be set at 660 mV in order to
work properly.
*Note
Prof Lang wants the starting frequency @ 200 Hz square wave.
Keep analog meter @ common and plus (+) position no need to move it to
current position, just set current @ 10 mA range it should work.
Cite as: Anant Agarwal and Jeffrey Lang, course materials for 6.002 Circuits and Electronics,
Spring 2007. MIT OpenCourseWare (http://ocw.mit.edu/), Massachusetts Institute of
Technology. Downloaded on [DD Month YYYY].
(1) +15 v
(1)
(10)
10
+ Red Lead
Analog Meter
Ameter
(13)
13
S3
- Black Lead
Ch2
1K
1K
CH2
7
Ch1
(5)
.1 uF
.1 uF
5
S1
S2
(17)
(2)
17
FG1
(2)
Cite as: Anant Agarwal and Jeffrey Lang, course materials for 6.002 Circuits and Electronics,
Spring 2007. MIT OpenCourseWare (http://ocw.mit.edu/), Massachusetts Institute of
Technology. Downloaded on [DD Month YYYY].