IRF3205 DATA PDF

IRF Datasheet, IRF MOSFET N-Channel Transistor Datasheet, buy IRF Transistor. ⑥ Uses IRF data and test conditions. Electrical Characteristics @ TJ = 25°C (unless otherwise specified). Parameter. Min. Typ. Max. Units. The following post explains the main features of mosfet IRF which It’s technical specifications may be understood with the following data.

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By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. I built this circuit as part of an automatic irrigation system and I am not sure how high the gate voltage should be: My basic idea is that if the soil gets to dry the arduino sets the gate dats, which turns the transistor on and the valve opens.

IRF Transistor: correct threshold voltage – Electrical Engineering Stack Exchange

The LED is to easily see if the valve is open or closed. I use a IRF transistor, which might be a bit of an overkill, but it was the smallest I had.

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The arduino outputs 5V which is just over eata threshold voltage of V Datasheet: The 5 volts seem to be to low to let enough current flow for the valve, which drains around 2. If the circuit is connect as in the picture only 0.

IRF3205 MOSFET. Datasheet pdf. Equivalent

When I connected the gate pin of the transistor directly to the 12V power source the circuit worked as intended and the valve opened. I learned from another thread here that this makes sense, because a higher gate voltage will let more current flow through the transistor. However I build the exact same project some months ago and used the exact same parts – the same resistances, the same transistor type and the same valve and it worked perfectly with a 5V gate voltage.

I suspected the transistor to be broken, but I switched it out several times and the results were the same.

You cannot drive the IRF in the manner shown. Running your Arduino at 5 V this should work ok out to a couple of Amps.

Looking at the details in the datasheet you need to understand that the V GS is applied between the Gate and source of the N-Channel FET, you can look at Figure 1 to see the switching characteristics. 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.

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Home Questions Tags Users Unanswered. Try your circuit in this form: Thanks a lot, now the circuit works exactly as I wanted!

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