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university:courses:electronics:electronics-lab-22 [12 Jul 2019 14:07]
andreeapop
university:courses:electronics:electronics-lab-22 [23 Aug 2019 14:00] (current)
amiclaus
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 ==== Hardware Setup: ==== ==== Hardware Setup: ====
  
-Configure the waveform generator for a 100 Hz triangle wave with 3V amplitude and 2.5V offset. Both scope channels should be set to 1V/Div.+Configure the waveform generator for a 100 Hz triangle wave with 3V amplitude ​peak-to-peak ​and 2.5V offset. Both scope channels should be set to 1V/Div.
  
 {{ :​university:​courses:​electronics:​a22_oc_bb.JPG?​ |}} {{ :​university:​courses:​electronics:​a22_oc_bb.JPG?​ |}}
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 ==== Hardware Setup: ==== ==== Hardware Setup: ====
  
-Configure the waveform generator for a 5 KHz square wave with 5V amplitude and 2.5V offset. Both scope channels should be set to 1V/Div.+Configure the waveform generator for a 5 KHz square wave with 5V amplitude ​peak-to-peak ​and 2.5V offset. Both scope channels should be set to 1V/Div.
  
 ==== Procedure: ==== ==== Procedure: ====
  
-Scope channel 1 now measures the input signal and scope channel 2 measures the output signal. The speed of the optocoupler can be characterized by the delay between the input and output waveforms. Another measure of the device speed is the rise and fall times of the output waveform. Another method of testing the frequency response of the optocoupler is to use the Network Analyzer instrument in the Scopy software. Set the frequency sweep from 10 Hz to 100 KHz. Set the AWG amplitude to 2V and the AWG offset ​ to 3V or whatever DC offset centers the output signal for your coupler circuit.+Scope channel 1 now measures the input signal and scope channel 2 measures the output signal. The speed of the optocoupler can be characterized by the delay between the input and output waveforms. Another measure of the device speed is the rise and fall times of the output waveform. Another method of testing the frequency response of the optocoupler is to use the Network Analyzer instrument in the Scopy software. Set the frequency sweep from 10 Hz to 100 KHz. Set the AWG amplitude to 2V peak-to-peak ​and the AWG offset ​ to 3V or whatever DC offset centers the output signal for your coupler circuit.
  
 ==== Questions: ==== ==== Questions: ====
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 ==== Hardware setup: ====  ==== Hardware setup: ==== 
  
-Now configure the waveform generator for a 1 KHz sine wave with 1.2V amplitude and 2.2V offset. Both scope channels should be set to 1V/Div. The offset might need to be adjusted slightly to make sure the output signal is relatively centered within the 0 to 5V range of the output. You want to make sure that the peaks of the sine wave are not too close to either 0V or 5V.+Now configure the waveform generator for a 1 KHz sine wave with 1.2V amplitude ​peak-to-peak ​and 2.2V offset. Both scope channels should be set to 1V/Div. The offset might need to be adjusted slightly to make sure the output signal is relatively centered within the 0 to 5V range of the output. You want to make sure that the peaks of the sine wave are not too close to either 0V or 5V.
  
 ==== Procedure: ==== ==== Procedure: ====
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 ==== Hardware Setup: ==== ==== Hardware Setup: ====
  
-Configure the waveform generator for a 100 Hz triangle wave with 3V amplitude and 2.5V offset. Both scope channels should be set to 1V/Div.+Configure the waveform generator for a 100 Hz triangle wave with 3V amplitude ​peak-to-peak ​and 2.5V offset. Both scope channels should be set to 1V/Div.
 {{ :​university:​courses:​electronics:​a22_drv_bb.JPG?​ |}} {{ :​university:​courses:​electronics:​a22_drv_bb.JPG?​ |}}
  
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 ==== Hardware Setup: ==== ==== Hardware Setup: ====
  
-Start with the waveform generator set for a 100 Hz triangle wave with 4.8V amplitude and 2.5V offset as you have done for the previous two configurations. Both scope channels should be set to 1V/Div.+Start with the waveform generator set for a 100 Hz triangle wave with 4.8V amplitude ​peak-to-peak ​and 2.5V offset as you have done for the previous two configurations. Both scope channels should be set to 1V/Div.
  
 ==== Procedure: ==== ==== Procedure: ====
university/courses/electronics/electronics-lab-22.txt · Last modified: 23 Aug 2019 14:00 by amiclaus