Howdy folks,
I've been trying to DIY an OPA1642 Alice circuit to power a 2-wire electret. I have tried breadboarding it (and heard my voice, albeit with noise due to no body/shielding), and have gone thru a couple layouts now on my homemade pcbs but get nothing but buzz. Full signal buzz.
I was hoping, after a few nights of struggling, that someone very kind could shed some light on my errors in this design.
I'm using the JLI-1813 and the Alice for OPA1642 circuit.
I'm dead set on building my own - to learn; but the brick wall has hit me and I'm seeking some guidance.
I'm pasting the schematic and PCB layout like I saw another user do (but they were coupling this with the hex converter) for help with troubleshooting.
Thank you very much for any advice!!
Layout:
Capsule:
Schematic:
I've been trying to DIY an OPA1642 Alice circuit to power a 2-wire electret. I have tried breadboarding it (and heard my voice, albeit with noise due to no body/shielding), and have gone thru a couple layouts now on my homemade pcbs but get nothing but buzz. Full signal buzz.
I was hoping, after a few nights of struggling, that someone very kind could shed some light on my errors in this design.
I'm using the JLI-1813 and the Alice for OPA1642 circuit.
I'm dead set on building my own - to learn; but the brick wall has hit me and I'm seeking some guidance.
I'm pasting the schematic and PCB layout like I saw another user do (but they were coupling this with the hex converter) for help with troubleshooting.
Thank you very much for any advice!!
Layout:
Capsule:
Schematic: