Hello!
I want to use a relaycard to control a 12VDC/180mA device using a 5VDC/20mA signal wich i think is pretty basic stuff but im getting kindof confused on how to connect things.
The relay card im using is B197 - Relay card 12 V/DC (Kemi electronics)
datasheet: http://www.kemo-electronic.de/product_info_pdf.php?products_id=334
It has three input pins: "MINUS", "IN", and "PLUS". and specifies the following:
* Between "MINUS" and "PLUS": 12 VDC
* Between "IN" and "PLUS": 3 to 12 VDC > 5mA
and it has a relaycontact with max 30VDC/3A
So Im going to tell you what i think and then you can correct me
Step 1: Connect a 12 VDC powersource to "PLUS" and "MINUS" which will be used to supply "operating power".
Step 2: Connect my weak output signal between "IN" and "MINUS" to be able to control the switch
Step 3: connect the device curcuit (which also is powered by the 12 VCD powersource) through the relaycontact
Would this be correct?
My main concern is if the relaycontact is acting as a powersource or just a "dumb" curcuit switch?
Thanks in advanced for helping out!
Cheers!
Towijo
I want to use a relaycard to control a 12VDC/180mA device using a 5VDC/20mA signal wich i think is pretty basic stuff but im getting kindof confused on how to connect things.
The relay card im using is B197 - Relay card 12 V/DC (Kemi electronics)
datasheet: http://www.kemo-electronic.de/product_info_pdf.php?products_id=334
It has three input pins: "MINUS", "IN", and "PLUS". and specifies the following:
* Between "MINUS" and "PLUS": 12 VDC
* Between "IN" and "PLUS": 3 to 12 VDC > 5mA
and it has a relaycontact with max 30VDC/3A
So Im going to tell you what i think and then you can correct me
Step 1: Connect a 12 VDC powersource to "PLUS" and "MINUS" which will be used to supply "operating power".
Step 2: Connect my weak output signal between "IN" and "MINUS" to be able to control the switch
Step 3: connect the device curcuit (which also is powered by the 12 VCD powersource) through the relaycontact
Would this be correct?
My main concern is if the relaycontact is acting as a powersource or just a "dumb" curcuit switch?
Thanks in advanced for helping out!
Cheers!
Towijo