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university:courses:electronics:electronics-lab-8 [24 Jul 2017 15:21] – change amplitude value to peak-peak Antoniu Miclausuniversity:courses:electronics:electronics-lab-8 [29 Aug 2017 14:32] – add xy plot Antoniu Miclaus
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 ===== Hardware Setup: ===== ===== Hardware Setup: =====
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 +{{:university:courses:electronics:bjt_stabilized_cs-bb.png|}}
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 +<WRAP centeralign> Figure 2 Stabilized current source Breadboard Circuit </WRAP>
  
 The waveform generator should be configured for a 1 KHz triangle wave with 3 volt amplitude and 1.5V offset. The input of scope channel 2 (2+) is used to measure the stabilized output current at the collector of Q2. The waveform generator should be configured for a 1 KHz triangle wave with 3 volt amplitude and 1.5V offset. The input of scope channel 2 (2+) is used to measure the stabilized output current at the collector of Q2.
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 The zero gain amplifier can be used to create a stabilized current source. Because the voltage seen at the collector of transistor Q<sub>1</sub> is now more constant with changes in the input supply voltage as represented by AWG1, it can be used as the base voltage of Q<sub>2</sub> to produce a much more constant current in transistor Q<sub>2</sub>. The zero gain amplifier can be used to create a stabilized current source. Because the voltage seen at the collector of transistor Q<sub>1</sub> is now more constant with changes in the input supply voltage as represented by AWG1, it can be used as the base voltage of Q<sub>2</sub> to produce a much more constant current in transistor Q<sub>2</sub>.
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 +<WRAP centeralign>{{:university:courses:electronics:bjt_stabilized_cs-wav.png?500|}}</WRAP>
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 +<WRAP centeralign> Figure 3 Q<sub>2</sub> collector voltage vs. W1 voltage </WRAP>
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 +<WRAP centeralign>{{:university:courses:electronics:bjt_stabilized_cs-wav2.png?500|}}</WRAP>
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 +<WRAP centeralign> Figure 4 Q<sub>2</sub> collector current vs. W1 voltage Scopy plot </WRAP>
  
 {{ :university:courses:electronics:a8_f2.png?500 |}} {{ :university:courses:electronics:a8_f2.png?500 |}}
  
-<WRAP centeralign> Figure 2 Q<sub>2</sub> collector current vs. W1 voltage </WRAP>+<WRAP centeralign> Figure 4 Q<sub>2</sub> collector current vs. W1 voltage Excel plot</WRAP>
  
 ===== Questions: ===== ===== Questions: =====
university/courses/electronics/electronics-lab-8.txt · Last modified: 25 Jun 2020 22:07 by 127.0.0.1

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