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Analog Curve TracerMakita Erni, Gregory Xie
Purpose of a curve tracer● Characteristic Curves
○ Transistor matching
● Plots current vs voltage for a component● Example: Tektronix 575 in lab
2https://www.radiomuseum.org/r/tektronix_transistor_curve_tracer_5.html
Why build a curve tracer?● Easier to read and export output
○ Helps with labs in class
● Smaller
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Overall Block Diagram
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Control Voltage Block Diagram
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Generating a pulse train
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Generating a staircase wave
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Note: Staircase doesn’t look correct because it finished resetting in the middle of a pulse - final design will solve this problem
Generating a triggered ramp
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Base Current Source/Sink
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Collector Current Source/Sink
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Subtractor
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Timeline
Week Goal
4/19-4/25 Integrate parts of project, simulate integrated design in LTSpice
4/26-5/2 Finish PCB layout, send to manufacturer
5/3-5/12 Assemble PCB, test physical circuit
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Questions?
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