I have recently acquired a K8055 board from a fiend (which came without an instruction manual) and have managed to get the inputs working and it hooked up to the computer.
However, I am unsure how the digital outputs work. I have come across this image/diagram on the forums:
What is the maximum Voltage/Current that can be put through the outputs?
What is the ‘CLAMP’ pin for?
The diagram suggests to me that there is a relay/transistor between ‘GND’ and the out pin, but the resistance didn’t change much at all when I tested it with a multimeter. An internal circuit diagram might help with this if there is one available.
[quote]What is the maximum Voltage/Current that can be put through the outputs?[/quote]Open collector output switches (max. 50V/100mA)
[quote]What is the ‘CLAMP’ pin for?[/quote]There are suppression diodes for inductive loads at the CLAMP pins.
[quote]The diagram suggests to me that there is a relay/transistor between ‘GND’ and the out pin, but the resistance didn’t change much at all when I tested it with a multimeter. An internal circuit diagram might help with this if there is one available.[/quote]Here are some datasheets you may use to study the internal structure of the output transistor array of the K8055: datasheetcatalog.org/datashe … 825_DS.pdf datasheetcatalog.org/datashe … 828_DS.pdf datasheetcatalog.org/datashe … s/2801.pdf
