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university:courses:electronics:electronics-lab-6m [12 Jul 2019 13:22]
andreeapop
university:courses:electronics:electronics-lab-6m [23 Aug 2019 12:51] (current)
amiclaus
Line 27: Line 27:
 ===== Hardware Setup: ===== ===== Hardware Setup: =====
  
-In the current mirror configuration,​ the opamp serves as a virtual ground at the mirror input (gate) node to convert the voltage steps from AWG 1 ( W1 output ) into current steps through the 1K? resistor. The drain voltage is swept using a ramp from AWG 1(output W1). Load the stairstep.csv file, set amplitude to 1.5  (3V peak to peakwith the offset to 1.5V.+In the current mirror configuration,​ the opamp serves as a virtual ground at the mirror input (gate) node to convert the voltage steps from AWG 1 ( W1 output ) into current steps through the 1K? resistor. The drain voltage is swept using a ramp from AWG 1(output W1). Load the stairstep.csv file, set amplitude to 3V peak-to-peak with the offset to 1.5V.
 V<​sub>​DS</​sub>​ of output device M<​sub>​2</​sub>​ is measured differentially by scope inputs 1+, 1-. The mirror output current is measured by scope inputs 2+. 2- across 1K? resistor, R<​sub>​2</​sub>​. V<​sub>​DS</​sub>​ of output device M<​sub>​2</​sub>​ is measured differentially by scope inputs 1+, 1-. The mirror output current is measured by scope inputs 2+. 2- across 1K? resistor, R<​sub>​2</​sub>​.
 If you don't want to use the op-amp configuration the following simplified configuration can be used as well.  If you don't want to use the op-amp configuration the following simplified configuration can be used as well. 
university/courses/electronics/electronics-lab-6m.txt · Last modified: 23 Aug 2019 12:51 by amiclaus