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Home Questions Tags Users Unanswered. Sending a digital high or a “1” will trigger the relay. Using single 5V relay jqc-3ff-s-z – safety advice required Ask Question. So, using Out1 a “1” will turn on the device and a “0” will turn off the device. Post as a guest Name.

JQC-3FF Relay Technical Data

On the Arduino side there is: From the trace on the board it would seem that the middle resistor 1 kOhm is attached to the “IN” pin serving exactly this purpose. Signal Vcc Ground On the appliance side there is: Thank you very much for your answer, I hope this topic will be helpful for others too. Normally open, which means that when the relay is on a digital high “1” is received from Arduino the device is ON.

Above is relay I’m using and everything works as expected using diagram below. Retrieved from ” https: Thank you for the answer. We recommend using a swappable cable to do this with, as using a relay requires you to perform some minor surgery on the appliance’s cable.

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By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Do I need to add anything else for relay to work safely and reliably? Make sure the appliance jqc-3ft be tinckered with is unplugged from mains.

Tutorial: DFR0017 V2 Relay

I’ve tested components on board and can confirm it has: Sign up or log in Sign up using Google. Normally closed, which means that when the relay is off a digital low “0” is received from Arduino the device is ON Out1: Sign up using Email and Password. Discussion View source History.

I’ll already tested wiring and relay using LED before posting. Email Required, but never shown. Cut and strip a portion of the positive wire so that you end up with two ends of the wire as shown in Figure 2. If it does – no need for any external components. I am interpreting kqc-3ff picture of the printed circuit board of the relay module jqc-3df accompanying notes as follows:. I know people recommend having resistor and transistor on IN line too, but are these necessary in this particular type of relay?

I understand such a question can sound silly for electrical engineer, but I’m software engineer venturing in electrical world and satasheet some guidance. This page was last modified on 13 Juneat Please jqc-3fff vary carful not to play with live circuits! Sign up using Facebook.


The relay should have the positive wire of the device being used connected to “IN” and to “Out 1” as shown in figure 2, adtasheet any digital signal pin on the arduino end For example pin By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

You could easily check this with an Ohmmeter or following the traces on the board. This voltage is consistent with the operating voltage on the relay”. Moreover, it even looks like relay board has diode already above VCC terminalso I wouldn’t need extra diode on IN line?

As Ghanima was a bit more explicit I’ve marked his datadheet as accepted. I am interpreting the picture of the printed circuit board of the relay module with accompanying notes as follows: The relay in use is: Sending a digital low or “0” will disable the relay. We will use “out1” for our example, using “out2” will simply reverse the logic, as explained above.