Hey guys,
I am trying to come up with a way of getting 120V AC to 12V DC and here is what I came up with:
I would need a step down transformer which has 1 winding for every 10 windings according to my physics formula from a year ago. Then the 12V AC would have to go through a full wave bridge rectifier from AC to DC and add a capacitor between the "+" and "GND" leads of the DC output. Also assuming that I did the calculations correct, if I step down 120V to 12V my amperes should be (assuming household amperes at 20A) 200A ?!?!?. Is that correct? And do I need to worry about it?
This power supply is being used to power a Microcontroller which takes in 12V DC (I am using a 7805 voltage regulator to step it down to a usable 5V) which controls high power LEDs which live off the 12V DC that was just created.
So am I correct or is there another way to do this?
I am trying to come up with a way of getting 120V AC to 12V DC and here is what I came up with:
I would need a step down transformer which has 1 winding for every 10 windings according to my physics formula from a year ago. Then the 12V AC would have to go through a full wave bridge rectifier from AC to DC and add a capacitor between the "+" and "GND" leads of the DC output. Also assuming that I did the calculations correct, if I step down 120V to 12V my amperes should be (assuming household amperes at 20A) 200A ?!?!?. Is that correct? And do I need to worry about it?
This power supply is being used to power a Microcontroller which takes in 12V DC (I am using a 7805 voltage regulator to step it down to a usable 5V) which controls high power LEDs which live off the 12V DC that was just created.
So am I correct or is there another way to do this?