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university:courses:electronics:electronics-lab-4 [23 Aug 2019 12:39] – Antoniu Miclausuniversity:courses:electronics:electronics-lab-4 [26 Dec 2023 10:18] (current) – [Directions and Setup:] Stefano Alfredo La Spina
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-====== Activity: A BJT Curve Tracer ======+======Activity: A BJT Curve Tracer - ADALM2000======
  
 ===== Objective: ===== ===== Objective: =====
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 Build the simple curve tracer circuit shown in Figure 1. The green boxes indicate where to connect the ADALM2000. Using the Scopy Signal Generator tool, in Channel 2  Buffer tab import the csv file for the stairstep signal needed. Build the simple curve tracer circuit shown in Figure 1. The green boxes indicate where to connect the ADALM2000. Using the Scopy Signal Generator tool, in Channel 2  Buffer tab import the csv file for the stairstep signal needed.
-Now at this point set the amplitude to 2 V peak-to-peak and the offset to 2.6 V. The waveform in the display should start at 0.6V and increase in 1 V increments to 4.6 V (0.6, 1.6, 2.6, 3.6, 4.6). For each step to be 5 mSec long for a total of 25 mSec, set the sampling rate 200 Hz.+Now at this point set the amplitude to 2 V peak-to-peak and the offset to 2.6 V. The waveform in the display should start at 0.6V and increase in 1 V increments to 4.6 V (0.6, 1.6, 2.6, 3.6, 4.6). For each step to be 5 mSec long for a total of 25 mSec, set the sampling rate to 200 sps.
 In Signal Generator Channel 1 configure a triangle wave with an amplitude of 5V peak-to-peak and an offset of 2.5V (wave should swing from 0 to 5V). Set the frequency to 200 Hz ( 5 times the 40 Hz of channel 2). Comparing the waveforms in Channel 1 and Channel 2, the triangle wave in Channel 1 should go through one cycle from 0 to 5 V and back to zero during the time of one step in the waveform in Channel 2. It will probably be necessary to set the phase of Channel 1 to 90 degrees to make them line up in this way.  In Signal Generator Channel 1 configure a triangle wave with an amplitude of 5V peak-to-peak and an offset of 2.5V (wave should swing from 0 to 5V). Set the frequency to 200 Hz ( 5 times the 40 Hz of channel 2). Comparing the waveforms in Channel 1 and Channel 2, the triangle wave in Channel 1 should go through one cycle from 0 to 5 V and back to zero during the time of one step in the waveform in Channel 2. It will probably be necessary to set the phase of Channel 1 to 90 degrees to make them line up in this way. 
  
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 <WRAP round download> <WRAP round download>
 ** Lab Resources:** ** Lab Resources:**
-  * Fritzing files: [[ https://minhaskamal.github.io/DownGit/#/home?url=https://github.com/analogdevicesinc/education_tools/tree/master/m2k/fritzing/bjt_curve_bb | bjt_curve_bb]] +  * Fritzing files: [[downgit>education_tools/tree/master/m2k/fritzing/bjt_curve_bb | bjt_curve_bb]] 
-  * LTSpice files: [[ https://minhaskamal.github.io/DownGit/#/home?url=https://github.com/analogdevicesinc/education_tools/tree/master/m2k/ltspice/bjt_curve_ltspice | bjt_curve_ltspice]] +  * LTSpice files: [[downgit>education_tools/tree/master/m2k/ltspice/bjt_curve_ltspice | bjt_curve_ltspice]] 
-  * Stairstep signal: [[ https://minhaskamal.github.io/DownGit/#/home?url=https://github.com/analogdevicesinc/education_tools/blob/master/m2k/import_waveforms/waveforms_sg/stairstep.csv | stairstep]]+  * Stairstep signal: [[downgit>education_tools/blob/master/m2k/import_waveforms/waveforms_sg/stairstep.csv | stairstep]]
 </WRAP> </WRAP>
 ==== For further reading on the Howland current source: ==== ==== For further reading on the Howland current source: ====
  
-[[http://www.cirrus.com/en/pubs/whitePaper/199210-Apex-Versatile_current_source_circuits.pdf|http://www.cirrus.com/en/pubs/whitePaper/199210-Apex-Versatile_current_source_circuits.pdf]] +[[adi>static/imported-files/application_notes/236037846AN_843.pdf|http://www.analog.com/static/imported-files/application_notes/236037846AN_843.pdf]]
- +
-[[http://www.analog.com/static/imported-files/application_notes/236037846AN_843.pdf|http://www.analog.com/static/imported-files/application_notes/236037846AN_843.pdf]]+
  
 [[http://michaelgellis.tripod.com/howland.html|http://michaelgellis.tripod.com/howland.html]] [[http://michaelgellis.tripod.com/howland.html|http://michaelgellis.tripod.com/howland.html]]
university/courses/electronics/electronics-lab-4.1566556770.txt.gz · Last modified: 23 Aug 2019 12:39 by Antoniu Miclaus

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