Electronic speed controller schematic diagram

ELECTRONIC SPEED CONTROLLER SCHEMATIC DIAGRAM DRIVER

I managed to find a fairly inexpensive MOSFET gate drive optocoupler part #IX3180 and digikey has some in stock and they are fairly inexpensive.

ELECTRONIC SPEED CONTROLLER SCHEMATIC DIAGRAM DRIVER

I would like to have the added protection of an opto for my circuit and like you suggested IвЂ™ll use a gate driver chip. So now I have all the components thatвЂ™s required to follow my latest schematics here and see it working, hopefully without any problems. I just got word that my digikey order has been delivered to my shop so hopefully IвЂ™ll be getting the circuit together later this afternoon with the Stp40nf10l Power Mosfet Logic N-channel 100V 40a. I canвЂ™t foresee the motor stalling but itвЂ™s better to err on the side of caution so IвЂ™d say yes there is a risk. In particular can vast currents flow in stall conditions and risk popping the MOSFET? IвЂ™ll know better when I get my 48 volt DC power supply delivered. My motor was using 4 amps at 36 volts DC so IвЂ™m assuming itвЂ™ll probably be around 6 or so amp draw at 48 volts DC. Yes I will be using the PWM on my Arduino Mega. Thanks for bringing that to my attention. I guess running the motor on the higher voltages will allow the motor to run cooler if the above statement is true according to those guys that wrote the paragraph above. When I get my variable speed controller built then I'll know what the current is at 48 volts and it'll definitely be higher. There's a lot more to this than I can understand at this time, I'm guessing there are a lot of factors that come into play to figuring it out. Therefore, for a particular power, the higher the voltage, the lower the current. But 480 watts is also given from a 24v battery by a current of only 20 amps. Electrical power is volts multiplied by amps so that 40 amps drain from a 12v battery is 480 watts. In an electric vehicle the motive power comes from the battery. This paragraph below is part of what I read on a site that sells motors for electric vehicles: I had 3 - 12 volt batteries hanging around the shop so I was able to get up to 36 volts for testing. Your absolutely right, the amperage did increase when I increased the voltage. ItвЂ™s definitely been an interesting project to get together. IвЂ™ll post some pictures of the Welding Positioner in a few days. Would you or anyone else here have any insight on that? I wonвЂ™t know what kind of problems welding will pose to the speed controller circuit but I guess time will tell. This variable speed circuit will be used as part of a heavy duty Welding Positioner my partner and I are building. Do you think one of these Mosfets are up to the task?Дrain to Source Voltage (Vdss) 100V Current. I think I have addressed all your concerns and have since reflected the changes in the schematics here as well, could please you have a look at the updated schematics to see that I didnвЂ™t miss anything? I looked at quite a few Mosfets on the net and did make notes of a couple of Mosfets that have a higher voltage rating but there are so many of them available and not being an electronics engineer itвЂ™s hard for me to determine exactly what I need but as far as voltage ratings these two below are rated for 100 V. I really appreciate your time and attention to the details of my circuit in your comments.

Electronic speed controller schematic diagram