Hey, just drew a pcb layout for a simple op-amp preamp. Any comments on how i can improve it or is it fine?
The thing in the upper corner is the pot with reinforced solder because it's gonna lift the pcb up.
Thank you
The thing in the upper corner is the pot with reinforced solder because it's gonna lift the pcb up.
Thank you
An externally hosted image should be here but it was not working when we last tested it.
Okey here comes some updates:
-Added filter caps for supply voltage
-Using +-12V for TL071
-Added a seperate headphone driver on board in form of a 386 (hence the 7812)
-Put the psu for the chips onboard
-Using seperate groundingcabling for psu gnd and signal gnd (they will however end up together when they hit the main reservoircaps ground)
Please feel free to comment if it sucks
The opamp circuit is just a standard simple negative feedback circuit with a gain of ~25. The signal is splitted from the pot to both amps.
The schematic for the LM386 circuit is taken directly from the data-sheet (gain=50 version)
Thanks
-Added filter caps for supply voltage
-Using +-12V for TL071
-Added a seperate headphone driver on board in form of a 386 (hence the 7812)
-Put the psu for the chips onboard
-Using seperate groundingcabling for psu gnd and signal gnd (they will however end up together when they hit the main reservoircaps ground)
Please feel free to comment if it sucks
An externally hosted image should be here but it was not working when we last tested it.
The opamp circuit is just a standard simple negative feedback circuit with a gain of ~25. The signal is splitted from the pot to both amps.
The schematic for the LM386 circuit is taken directly from the data-sheet (gain=50 version)
Thanks
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