Pad 16 of the SO-16 location is pre-connected to +5V,
suitable for logic chips.
If you wish to use a quad op-amp or other
14 pin linear device, mount it to the left, so pad 16 is not used.
To isolate pad 16 from +5V, carefully drill out this hole.
need to isolate the through-hole plating from the pad. It can be
done on either side.
A simple twist of a 1.5mm drill bit held
between your fingers is enough to do the job.
Check for continuity
to made sure you have succeeded.
Take care not to cut any of the
traces connected to the pad by over-drilling.
Click here for an enlarged version.
On the rear of the PCB are various surface mount pads. These are to
allow connection to the rails and IC pins under the SMT packages.
are also four pads associated with decoupling capacitors, allowing 1206
SMT decoupling capacitors to be used in these locations.
There are several power supply configurations possible with the board.
The board can be used with either +/-12 volts or +/-15 volts, although
the power connectors used are usually associated with +/15 volts.