Hi All,
I'm trying to build a simple transistor audio amplifier circuit to augment a crystal set I'm in the process of building.
I've found a circuit diagram I'm following (attached below), and while it works, the output appears rather distorted. The CRO output below shows the input signal, and the output signal (yes they have different scales so that they both fit on the screen). I am expecting to see the output signal as a clean version of the input, just larger. Is that wrong?
I've tried changing the value of input voltage (up and down), the bias resistor, as well as the filter caps, all with no beneficial result.
Can someone suggest where I'm going wrong, or if I'm perhaps just misinterpreting what I'm seeing on the CRO.
For reference, I'm using a 9014 npn transistor as that's what I have on hand, and have included a shot of my breadboard layout. Hopefully you can see what is connected where
The blue and white wires from the left are the signal (from a tone generator on an iPad). The blue breadboard strip is ground, red 5v. The red wire leaving the board at the right is the amplified signal out.
I'd love some insight into where I'm going wrong.
Ta,
Lance