first of all: I’m really absolutely a rookie and have very limited knowledge about electronic hardware.
I'm sorry, if my question is on the wrong board or if it’s simply stupid.
To my problem:
Currently I’m using this mosfet board:
To insulate my USB-Port / PC from the output 24V DC current.
My question here is: Is this the most safest/best solution for what i am doing or can i select another, safer circuit for my application?
For more details about my application i try to summarize the most important facts:
Via USB and a NI 6001 DAQ i can generate a 2,4 ~ 5 Volt signal to switch currently a mosfet board, switching the output site to a 24V DC current with 500 mA output at each channel (8 channels in total, summing up to 96 W)
The danger in the system is, that due to heating wires on the output site a 230 V short circuit could happen, and thus a save isolation between PC and output site has to be granted.
As I'm a total rookie in that field, i don't even know which keywords i have to look up to tackle my question^^
So, thank you in advance for your help and comments.
Noone mentioned DACs, this is a data acquisition module, basically an I/O breakout for USB.
For simple on-off an opto-isolated MOSFET switch like this is going to work well. If you want
PWM control however, opto-isolation is not likely to work as its too slow (with most common
Make sure you have complete galvanic isolation - some of the opto boards allow the option of sharing
power with the input (which completely negates the purpose of isolation), so check its configured
so that there is isolation (check with multimeter).
For mains isolation you'd want also the check the physical separation on the PCB is adequate, at
least 5mm, preferrably somewhat more with slots in the board under the opto units.