Found this on the internet in 5 seconds or less. Its not % clear whether its a bottom view of the device or top side view of the socket, you can determine that in . A relay is an electrically operated switch. Many relays use an electromagnet to operate a switching mechanism, but other operating principles are also used. JQC-3FC(T73) DC12V pinouts. A relay is an electrically activated switch. It consists of a coil internally which will creates a magnetic field that.

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Relay jqc-3f, connect to the arduino. Read times previous topic – next topic.

Relays CRT JQC-3FC(T73) DC12V T73-1C-12V

Hi, I have a relay jqc-3f, for example, I need to using Arduino, enable or disable the propeller to operate from AC V. I know that there are relay control modules, like DFRobot, but because of their high cost, would not like to use them hqc-3fc of the limited resource of the relay.


Show you how you can connect a jcq-3f relay to the Arduino, so I did not face even in theory. Thank you in advance!

please tell me the pin description of a 12v relay

It is clear that there is a version with two networks, one from Arduino, 5V, 12V other for relay control, and which operate using 12V transistor It’s just not very convenient, because will have to make separate meals I would like everything to work on one power supply.

I have read that t773 Arduino t7 12V, and they will be available at the outlet, do not want to burn the card check this out I apologize for my English.

No, don’t apologise, but if you want sensible answers, post a Web link to the thing you are talking about. Link up manifnst of the relay. OK, so that is a series of relays available in different coil voltages, notably 5 V and 12 V. The 5 V relay would require 80 mA to operate, while the 12 V would require 30 mA.


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Well, 80 mA is far too much for an Arduino pin to source 20 mA practical maximum and 12 V is too much for it to switch in any jqv-3fc. You need a general-purpose NPN transistor jqc-3c its emitter to ground, it collector switching one side of the relay coil with the other side going to whatever voltage you need to power it, and the base supplied from an Arduino pin via a Ohm resistor.

You also need a diode across the relay coil, anode to the transistor collector and cathode to the supply. Thank you very much for your reply, I will try to do so.

Just need to find a relay with 5 volts. Thank you, so clear, once again thank you for your help!