As Allison says, the simulation and the real world won't always agree.
For example, like most spice simulators, it simulates the normally used region and doesn't bother with bounds checking.
So the 2n3904's in your simulation will work quite well with 1kV of Vce and 100A of Ic, if that's what you ask of them.
But in most cases, it's very helpful, allows you to see inside the circuit and figure out what's going on
without filling the room with smoke.? And usually accurate enough.
An RF power amp has a lot of little things that become significant, and can derail a simulation.
Perhaps an extra half inch of trace from ground to IRF510 source, for example.?
Or secondary capacitances in the parts not included in the model.
But still very useful, and generally more or less accurate.
LTSpice helped me figure out what was going on with all the magnetics in the uBitx.
Jerry
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On Thu, Jun 7, 2018 at 12:51 pm, Gordon Gibby wrote:
Jerry, thank you so much for that running start on LT spice.
