It can t be done.
Convert ac fan to dc.
What you need is called an ac to dc inverter.
Without the efficiency loss ac or dc watts will always be the same because it is total power.
It s okay to buy a power supply that can source up to 12 amps at 12vdc.
If you need some more help let me know what the application you need a dc motor for and i ll see if i can t help out more.
If you search for power supply you will find many.
Write out the formula v ac 2 and replace v ac with the ac voltage you found with your multimeter.
If by convert a fan you mean turn an existing ac fan into a dc fan.
Convert ac electric fan 220v to 12v dc tagalog tutorial duration.
Since an ac power supply sends voltage in alternating waves dc voltage will be lower once you convert it.
Page 1 2.
Converting a 240v ac fan to 12v dc.
Once you find the watt amount from the ac volts x amps you can divide the watts by dc volts to get dc amps plus 15.
Converting an ac motor to dc motor is almost impossible and if you were really willing to do so then it would most likely cost more to convert it than to just buy a big dc motor.
I have a collection of dead workshop floor fans and a couple of the 24v motors you see in broken kids electric scooters.
Astroai ac to dc converter 8 5a 102w 110 to 12v car cigarette lighter socket ac dc supply adapter transformer for mini fridge car fan and other devices under 102w 4 6 out of 5 stars 352 16 99 16.
At half an amp per fan you could hook up 24 fans in parallel.
220v ac from 12v 90 amps car alternator 1000w diy duration.
A transformer will not give you dc.
You can t just feed a dc motor ac.
In this project i combine the two to make a workshop fan that runs of 12v dc.
Divide the ac voltage by the square root of 2 to find the dc voltage.