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I need help about C9 2.1DC Mini Relay Board
Hello everyone
Some years ago I bought a C9 Mini Relay from CNC4PC
I never use it and remain in a drawer.
Now I would like to use it, but I dont have any information about it.
They dont sell it anymore.
I write to CNC4PC without response
If some one knows the device, please send me the info.about especifications
Sorry my bad english.
Thanks in advance
Rene
Re: I need help about C9 2.1DC Mini Relay Board
It's an opto-isolated transistor switch that can handle a small DC load such as a contactor or a fan motor. The transistor specs are 100V 6A max. Judging by the resistor value, the control voltage is about 12V max.
What are you planning to do with it?
Re: I need help about C9 2.1DC Mini Relay Board
I don't think you need the C9 board for this. An NPN proximity switch already has the same exact circuit inside (an open-collector transistor). You can connect the proximity switch directly to the Hobby CNC board.
And your English is perfectly fine, don't worry about it. :wave:
Re: I need help about C9 2.1DC Mini Relay Board
I think you are overcomplicating things. The proximity switch has an open collector output, you can directly connect it to the board input without frying anything. You don't need any 5V regulators or resistor dividers, you can power the switch with whatever voltage you have available. Are the switches rated "5..36VDC"? Then the 24VDC fan output should work nicely.