Car charger from computer power supply

Since the topic with charging car batteries is always relevant, I want to tell you how to make a charger from the computer power supply. Especially the complexity of the manufacturing technology is not different, but you can always recharge the battery, if necessary. And you can make the device yourself at home.

The PC power supply is for you almost anyone, whose power will be even one hundred and fifty watts. When you get this block out of the system, you will see a bundle of wires. All of them you will not need. Cut off all the excess, leaving only the output of the positive wire voltage of twelve volts. Then you need to solder the resistor, whose function is to lower the voltage to twelve volts. It is quite easy to detect it. It passes through the circuit of the required wire to the microchip through two resistors. I'm not sure exactly, but, most likely, such a picture is observed in each power unit.

Instead of the remote resistor solder the potentiometer, its value should be lower than the withdrawn part. This is necessary in order for the charger from the computer power supply to regulate the current. Our task is to achieve a voltage at the output of fifteen volts, and that the current range can vary from zero to six amperes per hour. As you understand, such indicators are simply ideal for any battery, and our simple charger will also be able to provide them.

Go ahead. On the power supply there is only one green wire, which is used for switching on. We must solder it to the hull for a minus. As for the fan, it needs to be deployed in such a way that the air is pumped inwards. You will also need to purchase an ammeter and add it to the circuit. On it it will be possible to receive information about the current power of the current supplied to the battery.

I'll tell you exactly how I got the charger from the computer power supply. A new potentiometer, which was soldered in place of a resistor, was fixed to my body. I attached the ammeter from the opposite side. For clamps that cling to the terminals, I used metal laundry clothespins. They perfectly conduct current and have good grip strength in order to be held at the terminals. You can also buy special so-called crocodiles. Some people have successfully used for this purpose special clothespins-clamps for curtains.

So, I propose to sum up the results of this venture, namely: what pluses and minuses will our charger have from the computer power supply. The advantages are that you do not have to spend any financial resources for this purpose. I hope you can find some old power supply unit from the computer. Since these devices use impulse transformers, the whole design will not be as cumbersome and heavy as in traditional staffers. As for the shortcomings, he is only one. You will hear noise from the running fan.