Technical information

OPTO DIO Reference Read This First.
If an unregulated power supply is used ensure that it is
rectified and has sufficient smoothing to kept it above the
absolute minimum of 17 volts.
Figure 1-2. Unregulated Power Supply.__________________________________
Unsuitable power supplies are those that provide only half wave
rectification and those that are unsmoothed. Both these types fall
below the minimum +17 Volts necessary to allow the on board
regulation to work.
Figure 1-3. Useless Power Supply._____________________________
Output Driver Types.___________________
Those opto isolated cards that have output lines, Opto
DIO16, Opto DIO48, Opto OUT24 and Opto OUT48 can be
configured to use one of two types of high voltage drive chips.
These types are known as sink drivers and source drivers. The
sink driver chips chips are of type ULN2804 and the source
driver chips are of type UDN 2984 chips.
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