Wiki

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
university:courses:electronics:electronics-lab-6 [05 Mar 2019 12:29]
amiclaus [Procedure]
university:courses:electronics:electronics-lab-6 [12 Jul 2019 13:06] (current)
andreeapop
Line 1: Line 1:
-====== Activity ​6. BJT Current Mirror ======+====== ActivityBJT Current Mirror ======
  
 ===== Objective: ===== ===== Objective: =====
Line 30: Line 30:
 ===== Hardware Setup: ===== ===== Hardware Setup: =====
  
-In the current mirror configuration,​ the op amp serves as a virtual ground at the mirror input (base) node to convert the voltage steps from AWG 2 ( W2 output ) into current steps through the 1KΩ resistor. The collector voltage is swept using a ramp from AWG 1(output W1) set to 3V peak to peak with the offset to 1.5V. V<​sub>​CE</​sub>​ of output device Q<​sub>​2</​sub>​ is measured differentially by scope inputs 1+, 1-. The mirror output current is measured by scope inputs 2+. 2- across 1KΩ resistor, R<​sub>​2</​sub>​.+In the current mirror configuration,​ the op amp serves as a virtual ground at the mirror input (base) node to convert the voltage steps from AWG 2 ( W2 output ) into current steps through the 1KΩ resistor. The collector 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.  
 +V<​sub>​CE</​sub>​ of output device Q<​sub>​2</​sub>​ is measured differentially by scope inputs 1+, 1-. The mirror output current is measured by scope inputs 2+. 2- across 1KΩ 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-6.txt · Last modified: 12 Jul 2019 13:06 by andreeapop