Howdy
I'm fairly new to circuit design and I'm having a problem I can't explain.
I'm trying to create a very simple buffer circuit just to familiarise myself with op-amps.
(not sure why the image works in editor and not in viewing the thread - here it is https://www.eecs.tufts.edu/~dsculley/tutorial/opamps/opAmpBuffer.jpg)
I'm using an LM324 and when I set it up like this, all I get is extremely high output and a very distorted signal.
I've got my phone providing the audio via a 1/8" plug connected directly to the breadboard, and listening via headphones. When I connect the headphone directly to the phone output, it sounds fine, but when I connect to the output of the op-amp, it is extremely loud and distorted. As I understand, this circuit should really just pass the signal through basically unaffected, but again, I'm fairly new to this.
I tried another lm324 and another dual op-amp, but same result, so something makes me think I'm doing something fundamentally wrong.
Can anyone provide any insight as to why my circuit is a distorted mess and not a simple audio pass-through?
Thank you.
I'm fairly new to circuit design and I'm having a problem I can't explain.
I'm trying to create a very simple buffer circuit just to familiarise myself with op-amps.
(not sure why the image works in editor and not in viewing the thread - here it is https://www.eecs.tufts.edu/~dsculley/tutorial/opamps/opAmpBuffer.jpg)
I'm using an LM324 and when I set it up like this, all I get is extremely high output and a very distorted signal.
I've got my phone providing the audio via a 1/8" plug connected directly to the breadboard, and listening via headphones. When I connect the headphone directly to the phone output, it sounds fine, but when I connect to the output of the op-amp, it is extremely loud and distorted. As I understand, this circuit should really just pass the signal through basically unaffected, but again, I'm fairly new to this.
I tried another lm324 and another dual op-amp, but same result, so something makes me think I'm doing something fundamentally wrong.
Can anyone provide any insight as to why my circuit is a distorted mess and not a simple audio pass-through?
Thank you.