Redesign of the computer power supply to different devices

The computer serves us for years, becomes a true friend of the family, and when it becomes obsolete or hopelessly broken, it can be so pitiful to carry it to a landfill. But there are details that can last a long time in the home. This Numerous coolers, and a processor heatsink, and even the case itself. But the most valuable is the BP. The computer power unit, thanks to its decent power at small dimensions, is the ideal object of all modernizations. Its transformation is not such a difficult task.

Redesign of the computer power supply to a normal voltage source

You need to decide what type of power supply your computer, AT or ATX. As a rule, this is indicated on the case. Impulse PSUs operate only under load. But the device power supply type ATX allows the closure of green and black wires to simulate it artificially. So, by connecting the load (for AT) or by closing the necessary terminals (for ATX), you can start the fan. The output is 5 and 12 volts. The maximum output current depends on the power of the PSU. At 200 W, at a five-volt output, the current can reach about 20A, at 12V - about 8A. So without unnecessary costs you can use a good power source with good output characteristics.

Transformation of the computer power supply into an adjustable voltage source

Having such a BP at home or at work is quite convenient. It is not difficult to change the standard block. It is necessary to replace several resistances and evaporate the throttle. The voltage can be adjusted from 0 to 20 volts. Naturally, the currents will remain in the original proportions. If you are satisfied with the maximum voltage of 12V, it is enough to install a thyristor voltage regulator at its output. The regulator circuit is very simple. In doing so, it helps to avoid interference in the inside of the computer unit.

Redesign of the computer power supply in the car charger

The principle is not much different from the regulated power source. It is only desirable to change the Schottky diodes to more powerful ones. The charger from the computer's PDU has several advantages and disadvantages. The pluses are, first of all, small size and light weight. Transformer storage is much heavier and inconvenient to operate. The disadvantages are also significant: criticality to short circuits and reverse polarity.

Of course, this criticality is also observed in transformer devices, but in the event of failure of a pulsed unit, alternating current with a voltage of 220V tends toward the battery. It is terrible to imagine the consequences of this for all devices and people nearby. The use of protection in power supplies solves this problem.

Before using such a charger, seriously consider making a protection circuit. Moreover, there are a large number of their varieties.

So, do not rush to throw out spare parts from the old device. The redesign of the computer power supply will give him a second life. When working with the BP, remember that its board is constantly under voltage of 220V, and this poses a mortal threat. Observe the rules of personal safety when working with an electric shock.