[quote]I want to connect the K-8055 Board with an external Power Source (5V DC). On which pins should i connect the Power source?[/quote]With inductive load connect the plus (+) pole of the external power supply to the CLAMP terminal and minus (-) pole to GND.
[quote] I want to connect an constant current source on the digital outputs. On which pins should i connect the Voltage. GND & CLAMP?[/quote]Connect (-) to GND and (+) to CLAMP terminal. Connect your device (Relay coil, DC motor etc…) between CLAMP and digital output of the card.