Electronics > Beginners

which free / low cost EDA / Spice software

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innkeeper:
I am hoping folks can point me in a good direction.

I'm looking to model up a BJT audio amplifier and see what instabilities exist under varying reactive loads and see how circuit changes effect stability.

looking for something free or low cost to do this on that has a reasonable number of models available.  I don;t mind a little learning curve.

this simulation will be purely analog

Wimberleytech:
LTSpice

MagicSmoker:
Yeah, no contest here: LTSpice is by far the best choice.

https://www.analog.com/en/design-center/design-tools-and-calculators/ltspice-simulator.html

Gyro:
Tina-Ti is TI's alternative offering. A little less powerful than LTSpice, but some folks find it easier to drive.

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