I keep getting "Simulator returned no data". I've gone through the troubleshooting page, ensuring that none of the mistakes are present. I've also gone and moved around each component, to ensure they're actually connected. However, I can't seem to get it to successfully return, or evaluate either the simulator or solver. I'm just getting started in this, so I'm sure it's something trivial. Here is the diagram: https://www.circuitlab.com/circuit/dujh6nf4xpj8/class-a-amplifier/ |
by eigenrick
January 31, 2024 |
Ok.. so I got this one to solve. I think I understand what I need to do for the signal generator + amp voltage. However, now the behavior of the frequency response is not what I expected. The output voltage keeps getting amplified. It's like there is a cycle, but I can't see where. |
by eigenrick
January 31, 2024 |
Actually.. it's the Input that keeps getting amplified like crazy... that seems even weirder to me. |
by eigenrick
January 31, 2024 |
Here is another approach. I built this one based on this video: https://youtu.be/S7jrirsfkNw?t=1360 I'm not getting the same results. My output is from 3 to 5v... where it should be the same, but the current should be greater. |
by eigenrick
February 02, 2024 |
In your first cct the DC source is not properly connected to ground. That is causing the input and output 'stepping'. Lower your AC voltage source magnitude to something like 0.3V. cct has a gain of about 15 and you dont want to saturate the output. 1nF is way too small a capacitance to drive a signal onto Q1 base. 10uF works much better. You need to adjust the resistor values to give a 6V operating point on Q1 collector. Do the DC Solve to see what your DC values are. |
by john_pa
August 21, 2024 |
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