Welcome to the support thread for the APP4010 unbalancing board.
Description: APP4010 can use a DOA or an IC opamp as unbalancing item.
I have designed it using the input section of my I/O board.
To avoid electrolityc caps on the signal path this board has a DC servo system inside for out offset voltage reduction .
It can be configured with a few of options.
It can be powered also with dual 24V rails for the opamps that can run with them.
The DC servo can powered with a different power supply if needed or with the same power supply that is used for the DOA (as in picture). Moreover, to simplify all if is needed using a lower power supply voltages for the opamp of the servo, there are two zener diodes to lower the main power supply voltages.
The DC servo cannot be used if not needed.
