Conventional System configuration with the
common to the magnets or solenoids, POSITIVE
Basic boards use ULN2803a IC's that are rated
at 500 mA per gate, 8 gates per IC. Voltage
up to 40v DC.
If more than 3 outputs are on at one time, the
current is lower.
Boards are available from 8 notes to 128 notes
in a variety of configurations.