I want to run a DC motor 3.7/7.4 with esp8266/nodemcu. But I am not getting full speed/throttle using normal BC547 transistor nor uln2803. I want a transistor Darlington/Mosfet which can give me 1.5 Amps Collector current and can be driven by 3v logic from esp8266.
Form factor is important an I am making a RC plane receiver with this.
I’m now using IRF540N mosfets., but you’ll need to add 220ohm resistor in series on gate. Altough i’m using it with atmegas which have 5V logic and mosfet gate is opening by applying a voltage, so it won’t work at full power. Any way i would look for mosfet with Vgs 3V. Or use a suitable transistor(drawback- more heat)
Yes I have irf40 but as you told it’s for 5v so doesn’t works well with 3v signal…Tip31 …i got them…till now it’s going the best performance 85℅ throttle… Hope I get some even better component… I need full throttle for my rc plane so will keep looking…
Thanks everyone!
@scientist1995@ather86 But TIP31 is a bipolar NPN! @wiipro: The IRF540N is a good and cheap power MOSFET, but its Gate threshold voltage can be as high as 4V, so it’s a no go for 3.3V logic.
Better choice can be for example IRF3708, with gate th. voltage of 2.0V max. Max voltage is 30V.
Or use some driver IC. there are plenty of them.
@marvin7 yes its a bipolar power transistor but as good gain with Collector current as high as 3Amps. If used as switch it can give good performance as I need to work with less than 12v dc I can still use them. Since I am getting a 3v mosfet its an alternative. If some one can suggest a mosfet it would be better as they are more relaible heat resistant and can switch high voltage and current. Please suggest if you know some mosfet easily avalibale!
isn’t the IRF3708 available in your location? If it is, then it should meet requirements. And it’s cheap too.
Can look for another one, if it isn’t
You can stick with power bipolar too, these are good enough, but you asked for MOSFET
Hello all! Am also trying same kind of stuff which is trying to enable peltier module by esp8266 with help of irf540N …will it work??Please correct me if am choosing the incorrect one.
Thanks in advance!
Do you really think that the information you’ve supplied is sufficient to allow forum members to give you sound advice about your project?
I’d normally advise you to start a new topic rather than tag a question on to a three and a half year old one, but your question isn’t even Blynk related so I’m not really sure that it belongs here at all.