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].