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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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.
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.
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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