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university:courses:electronics:electronics-lab-32 [05 Mar 2019 12:34]
amiclaus [Other uses for this circuit:]
university:courses:electronics:electronics-lab-32 [23 Aug 2019 14:02] (current)
amiclaus
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 =====Hardware Setup:===== =====Hardware Setup:=====
  
-AWG1 is connected as V<​sub>​IN</​sub>​ and should be configured as a sine wave with an amplitude greater than 6 volts, zero offset and a frequency of 100 Hz. The scope inputs are used to monitor various points around the circuit such as V<​sub>​IN</​sub>,​ V<​sub>​OUT</​sub>,​ the voltage across R<​sub>​S</​sub>​ and thus the current through R<​sub>​S</​sub>,​ and the gate of M<​sub>​1</​sub>​.+AWG1 is connected as V<​sub>​IN</​sub>​ and should be configured as a sine wave with an amplitude greater than 6 volts peak-to-peak, zero offset and a frequency of 100 Hz. The scope inputs are used to monitor various points around the circuit such as V<​sub>​IN</​sub>,​ V<​sub>​OUT</​sub>,​ the voltage across R<​sub>​S</​sub>​ and thus the current through R<​sub>​S</​sub>,​ and the gate of M<​sub>​1</​sub>​.
  
 {{ :​university:​courses:​electronics:​active_rectifiers_hardware_setup.png |}} {{ :​university:​courses:​electronics:​active_rectifiers_hardware_setup.png |}}
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 =====Questions:​===== =====Questions:​=====
  
-Change the peak amplitude of the AC input waveform. What is the minimum peak value of the AC input where the PMOS transistor is still actively rectifying the input, i.e. the V<​sub>​GS</​sub>​ is greater than the threshold voltage and the device is turned on? What determines this minimum voltage?+Change the peak-to-peak amplitude of the AC input waveform. What is the minimum peak value of the AC input where the PMOS transistor is still actively rectifying the input, i.e. the V<​sub>​GS</​sub>​ is greater than the threshold voltage and the device is turned on? What determines this minimum voltage?
  
 Try different frequencies for the AC input. How does the frequency effect the peak value and the width  of the current pulse in R<​sub>​S</​sub>?​ Try different frequencies for the AC input. How does the frequency effect the peak value and the width  of the current pulse in R<​sub>​S</​sub>?​
university/courses/electronics/electronics-lab-32.txt · Last modified: 23 Aug 2019 14:02 by amiclaus