sollazzo87
New Member
hi,
this is my first message.
i'm trying to read ph using a microcontroller, and i read this topic (that now is locked, so i'm creating a new thread here) https://www.electro-tech-online.com/threads/ph-amplifier-for-micro.41430/
i don't understand if the schematic is correct:
watching the last schematic posted on that topic, TL084's pin 3 is + or - ? and same, pin 2 is + or -? because i took a look on pdf too, and pcb layout is not equal to the schematic.
beside it seems that pcb layout of RV1 component is wrong too.
i re-write the circuit using eagle cad (you can find files on attachments), but i don't know if it's correct.
could anyone help me to resolve it please?
sorry for my weak, but i don't speak it very well.
best regards,
alessandro
this is my first message.
i'm trying to read ph using a microcontroller, and i read this topic (that now is locked, so i'm creating a new thread here) https://www.electro-tech-online.com/threads/ph-amplifier-for-micro.41430/
i don't understand if the schematic is correct:
watching the last schematic posted on that topic, TL084's pin 3 is + or - ? and same, pin 2 is + or -? because i took a look on pdf too, and pcb layout is not equal to the schematic.
beside it seems that pcb layout of RV1 component is wrong too.
i re-write the circuit using eagle cad (you can find files on attachments), but i don't know if it's correct.
could anyone help me to resolve it please?
sorry for my weak, but i don't speak it very well.
best regards,
alessandro