Hello everyone. I am new to this forum since I have a question.
I am designing a system where I use my phone to control a LED strip and the lights in my bedroom. The lights are controlled by a 5v relay which is switched with a BJT. Since I use a NodeMCU as a micro controller and the NodeMCU only has max output of 3.3V.
I attached the schematic I used to control the relays (This is only one set of 2 relays in total I have 8 relays).
Now I was testing the endurance of this circuit since I want to use it for a long time and noticed that the relays got warm. Even when there was no load attached to it. It is not that warm that I can't touch the relays, but it is noticeable a bit above room temperature. It is more like it is lukewarm. Is this normal behaviour for this type of relay?
They function as intended I only don't want that the relays brake after a while or burn my house down on accident.
I am designing a system where I use my phone to control a LED strip and the lights in my bedroom. The lights are controlled by a 5v relay which is switched with a BJT. Since I use a NodeMCU as a micro controller and the NodeMCU only has max output of 3.3V.
I attached the schematic I used to control the relays (This is only one set of 2 relays in total I have 8 relays).
Now I was testing the endurance of this circuit since I want to use it for a long time and noticed that the relays got warm. Even when there was no load attached to it. It is not that warm that I can't touch the relays, but it is noticeable a bit above room temperature. It is more like it is lukewarm. Is this normal behaviour for this type of relay?
They function as intended I only don't want that the relays brake after a while or burn my house down on accident.
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