How to make a converter?

Some car owners areneed to connect your personal computer or any other user electronics to the car. The reasons for this may be very different, but the problem that prevents it is always one. It is in the absence of 220 volts required for the computer's operation. At the moment, car dealerships offer a fairly large selection of special devices - inverters, which are necessary to obtain an alternating voltage of 220 volts from an automotive DC voltage of 12 volts. Unfortunately, such devices are not cheap. Therefore, it makes sense to make it yourself. And so, how to make a voltage converter?

Technical part: schemes and materials

In order to make the converter,it is necessary to think which scheme is better to apply. It is worth considering the principle of UPS. It protects the information in jumps and even with the complete disappearance of voltage from the electrical network. At this point, it automatically switches the computer's power to its battery. Its principle of operation is to convert a constant low voltage battery into a high alternating voltage. The capacity of such a built-in battery is enough, as a rule, for 10-15 minutes of operation, and this is enough to save data and correctly close the programs. Scheme, how to make a converter from an uninterrupted device, see the photo to the article.

You can look for an old UPS on a flea market orthemselves in the garage, they very often came complete with old computers. The main thing is that such a UPS can be switched on even if there are no 220 volts. If you disassemble the UPS, you can find there are 2 batteries of 12 volts connected in series. These batteries are connected to the board by two wires: black (-) and red (+). Use the power cable from the computer as the wiring. Next, we disconnect the terminals from the battery and connect the fuse block with one wiring to the red UPS, which is used during the alarm connection. Another wire must be connected to the relay contact, the voltage from the car battery will go through it. You can also use the contact for the fog lamps. You can buy it in any car dealer. Such a relay will operate from 12 volts, and finish its work when the voltage drops below 12 volts. This is necessary to prevent the battery from depleting the vehicle. Now you need to connect a switch that will turn off the voltage supply to the relay. This circuit will be used in the process of how to make a current converter.

Practical part: connection of the converter

In practice, during the connection of the converterto the car, there may be a problem associated with a sharp drop in battery power. Therefore, you should carefully study how the process of connecting the converter is going, and how to cope with unexpectedly arisen trouble. First of all, it should be noted that the UPS output to 220 volts should be made as the most common socket. This is very convenient and allows you to connect almost any device with a "plug". At the very beginning of connection of the converter to the car it is necessary to disconnect all sources of power consumption. These include lamps in the cabin, sensors for opening doors, tape recorder. Then connect the tester to the car battery and connect the wires that go from the UPS to the battery. Now you can turn on the switch, and then the UPS itself. After power-on, you need to be on your guard for the first few minutes, because when you start the computer, you may receive a signal about the lack of battery power. In this case, you just need to start the engine of the car, and the generator will start to give the required amount of volts. The important point that you need to know to anyone who thinks about how to make a converter and connect it to the car is to remember to turn off the UPS. Otherwise, after 30 minutes, the battery will be discharged completely.