I'd like to hear some suggestions on the different options to make a DC power supply.
I have the following requirements.
Input Voltage: ~115v Wall outlet. Output Voltage: 90v 2A (Power for Motor) Output Voltage: 9v 1A (Power for Arduino USB)
Ideally, the power supply not be huge.
One option for the power supply part is to order a toroidal based premade supply.
This device will cost roughly $90-120 from Antek. The downside is that it's physically huge for what I think I need. 8.25"x5.5"x3.5"'ish
I would assume that I also have other options vs a large transformer.
So the goal is to take 115vac and turn it into 90vdc/2a.
After I get to the 90vdc output. I would like to be able to control the speed of a motor attached to it via PWM.
I have this part worked out from a arduino code point of view.
Unfortunately, selecting random components from digikey/mouser isn't my forte and I'm afraid that I might be missing some of the obvious things that someone else would see.
So, if we have the 90v dc, we need to be able to switch it on and off quickly via the PWM pin. From my other posts, this should be possible to do via mosfet. I have a litle bit of confusion on whether I should get a logic gate type mosfet that plug directly into the arduino. Or if I should get some type of mosfet driver, which appears to be like locating bigfoot.
Is this the best option.
End goal, 90vdc controlled via pwm to control the speed of a motor.
Side Goal, is to provide power for the Arduino. This can get done via a seperate wall wart style power supply. But I would like to combine if possible to provide a cleaner product.
If the the large ~$100 dollar toroid power supply is the best option. I can do it. I'm just concerned that my little cellphone charger takes 115v and turns it into ~5v. I wouldn't think that it would be as involved to take 115 and turn it into 90.
Thanks for any help.