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I think that is not normal. That just will make your circuit much easier and save you a transistor and resistor.

IRF Datasheet, PDF – Alldatasheet

Some people however have trouble reading a datasheet or do not know what to look for and in that case foing with TTL level FETs is a safe option. Thanks very much for your time. I had a IRF Mosfet but now i understand why it became very hot. That indeed is odd and I start to wonder if it is the IRL that is shutting down or something else. This will need datasheeet good heatsink if the load is on for more than a second or two, but it is no issue if it gets millisecond pulses every few seconds.

Then you can find the current in the datasheet? Thank you for your answer.

If the steppermotor does not draw too much, think about an ULN The Vce in saturation is about 0. If you are using this circuit to catasheet any serious loads, then it is wise to solder some thick wire over the tracks coming from the MOSFET.


IRF MOSFET Datasheet pdf – Equivalent. Cross Reference Search

Dqtasheet IRLN can take 36 amps. They are good switches,but you dont want to use them as resistors. Please bear in mind that eventhough a logic level FET, the IRLN is not at its lowest resistance at 5 Volt, but it shld be low enough to make 10 amp no problem. That is not surprising.

Using MOSFETS with TTL levels (5 Volt and 3.3 Volt)

See the reference below: But to be sure i had a question. But if it is working for you, that is good. That is always a special situation coz of the huge spikes you can get in the coil. I will use Arduino to dim the power acording to inputs from handlebar. Like the diagram at the top of the page here. Yes you can make it Ohm. As the can be fed with up to 18 Volt, it shouldnt be a big problem to use the to switch.

Also easier if you need to do high side switching. I am not sure where you are based but the IRL costs abt 60 cts where I am. Sometimes a MCU seems to be driving a mosfet correctly, but only a careful measurement will show the mosfet is not getting fully turned on, overheating and wasting power.

Post as a guest Name. Rds 38mOhm with a Vgs of xatasheet. I am using this converter: So no R1 urf520 T1 from your diagram link? I am not sure if there is an easier way to do it.


The relatively cheap BUZ11 datahseet also an option. Home Questions Tags Users Unanswered. Sorry, your blog cannot share posts by email. But then again, if bought at the right place. I would like to use it to switch car heated seat 12V, 8A. Here is the curve for the IRL Thanks, I learnt few things in my new journey. I even used feedback protective diode with motor.

At 5V volt on the gate, the IRF will pass something around 4. I will try source a IRL For a BC it is a bit on datzsheet edge. Post was not sent – check your email addresses!

Thanks a lot datashee this excellent article. Was that the same as for the mosfet? So if yr gate voltage is 5Volt, your source voltage will never be above that. Sign up or log in Sign up using Google. Do you have the break out board in the drain or the source?

Thank you for the clear explanation. Notify me of new posts via email. I seem to have missed your reply at first since I did not subscribe to your posts fast enough apparently: