How to PROTECT computer GPIO lines from damage by the 28VDC

The issue:

Has TTL level computer board with GPI/O lines ,{Input-Output)

The power supply of the unit is 28 VDC, a momentary short can be happened.

from the 28VDC to the GP I/O lines

Question: how to prevent a damage to the computer board?

Any idea welcome

dovross@gmail.com

Parents Reply Children
No Data