Common Emitter Transistor

sparky 1 said:

NPX PMBT2222 model and more base current. Bypass connected also works.
It went smoothly after increasing the voltage source.

Like open source Linux operating system and applications that had large support.
I think the incentive for semiconductor companies and sales to maintain models to insure clients are happy.
Simulation teachers may spend less time explaining bugs and have better user interface.
This simulation output should include an audio spectrum analyzer with sufficient resolution.


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Yes, the model of the PMBT2222 transistor in the Multisim program is correct. I will add to your wishes: Qspice allows you to output the sound of a signal. For example, you will hear how various electronic simulators work. For example, a duck quacks or a nightingale sings, a steam train puffs, a siren works. This is useful for novice amateur radio operators. The program also allows you to observe the signal applied to the microphone input of the computer and build a spectrum.
A note on amplifier modeling: For correct results, the impedance of the signal source must be taken into account. I previously showed how the result changes when the signal source's impedance is present in the simulator. Not taking this into account is excusable only for beginners. Although this has practically no effect in the circuit you have shown, if there is a capacitor in the emitter (at maximum gain) in the circuit This is very important!