12v to usb adapter \ 12v to 5v transformer (great for cars) - tablets you can draw on

This will show you how to make 12 v to USB (5v)adapter.
The most obvious use is the 12 v car adapter, but it can be used anywhere with 12 v!
If you need 5 v in addition to USB, just skip the steps to add a USB port; )
You need more information about the fuse: If you use a different transistor, you can use a higher current and you can use a higher rated current.
Because we put the fuse on the 12 v Side ,(
This can be from 11. 5-12.
We need to use a value of 2.
5 times smaller than we want on the USB side.
So if you want 1.
The USB port is 5 amps and then 0 is selected.
6amp fuse if you want.
5 amps at 5 v, you can choose 1 amp fuse if you want a 3 amp fuse.
75 amps, you choose 1.
5 amps fuses, etc. ).
Also, if you really want to seriously protect your circuit, just put one on both sides.
Of course, you can also use the existing 12 v.
The 5 v converter in your car, be it light, medium or heavy;
Or use these nice power adapters that should be integrated into other projects, or use a waterproof, ultra-high power alternative power supply with a radiator.
They are good because of their screw terminals.
The Transitor has 3 pins, which we call pins 1 2 and 3 (
Its radiator/metal plate is facing you when you look at the transistor).
Pin 2 is the ground (-). -
Pin 1 will be connected to the power supply via a fuse.
The fuse holder has a different size, and the size doesn't really matter as long as it has the same rating.
There may be a difference of $1 or something. -
Pin 2 will be connected to the ground (-)
So we will add only one wire. The capacitor will be connected to pins 2 and 3 (
Legs short to ground \ pin 2)
The function of this capacitor is to reduce the starting power-spikes.
USB will be connected to pin 2 (-ground)and 3 (5v +).
This picture can be used;
Use a picture named "container.
I have used the recycled USB ports and they may be easier to weld if you order them.
The benefit of doing so is having a pair of solid combinations like I do.
If you have multiple ports, connect all pin 1 to pin 1, connect pin 4 to pin 4 * explain in more detail why the port is wired as is, if you don't care * Please skip in order to keep the voltage stable at 5 v, in order to keep the voltage constant, your port should be in parallel rather than in series.
What does this mean?
Very simple, you want to make sure that the Red Line reaches every front port you have (
Don't go to "wire transfer to" and then "from minus to next ").
Do each red line have to leave from the same place?
No, it's important that they all come into contact with each other.
If you are adding an LED, place it in the same way as the capacitor, but connect the appropriate resistor in series with it (
This calculator will tell you how to use 5 v as voltage in 1 LED calculator)(
AKA, make it an extension of a leg).
You may want to put it on the wire so you can move the LED to a better position later.
I like to package the circuit in the hot glue because I find the hot glue easy to apply and easy to remove but not accidentally.