On Sat, Mar 15, 2025 at 11:26 AM, john23 wrote:
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Hello ,I am trying to test a voltage regulator by re[lacing a steady resistor with some sort of varying resistor.
Given the circuit in the attached Zip file , what kind of "resistor" you reccomend?
Your uploaded files have very little information.
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Is the "regulator" the 3-transistor circuit, with R4 being the load at the regulator's output?
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Can you? describe how you want the load to vary?? Do you know what you want it to do, or do you just want it to be random?
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Can you describe it mathematically using a B-source?? Perhaps a Pi Bi-source?? That should lead you to what you should try.
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Andy
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