Changing E-capacitors on your Motherboard
Introduction
Many people discard a motherboard as a "burned" without knowing that a simple change of capacitors could revive them. This guide aims to teach to change the capacitors of motherboards, a procedure that has various applications. This guide Will serve you if your motherboard has the original capacitors damaged, or if you want to make capacitors for better and improve the stability of voltages and power to achieve a better overclocked.
What is a capacitor and what its design factors ?
Electrical and electronics, a capacitor, sometimes called the Anglicism capacitor, a device consisting of two drivers or armor, usually in the form of plates or sheets, separated by a dielectric material, which subject to a potential difference (ddp) acquire a specific electrical charge.
The capacitors are graded according to their ability to store this electrical charge. That skill is called capacitance and is measured in Farads. The Farads are a huge cargo unit, so in general the capacitors that one finds in these areas have capacitancias the order of thousandths of Farads, or μF. In any case, not all capacitors are equal, because the fact that a capacitor is 1000 μF capacitance does not mean that it can replace any other μF capacitor 1000. How's that? Well, it happens that in addition to its capacitance, the capacitors are graded according to their voltage operation. (voltages are more typical 6.3, 10, 16, 25, 50, 63, 100, 220 and from there to infinity and beyond)
Additionally, the capacitors have a temperature range for the lower and upper ranges of tolerance, and measures such as ESR and ESL to reflect the distortion of capacitance depending on the frequency of the alternating current. All these taken together determine whether a capacitor can be used in a given circuit. The engineers responsible for the design of a product generally considered all these factors when choosing the condenser that will go into a product, both to ensure functional fitness as to minimize costs.
What are the rules for replacing capacitors?
In general we need to find an as similar as possible to the originals. It can be (though not always) to replace a condenser of a capacitance given by a higher-capacitance (remove one of 1000μF and put one of 1200μF for example). It can be (although, again, not always) make a capacitor with a wider range of tolerance (for example, one that could hold 100 ° C to replace one that holds 85 ° C). And you can replace one with a high tolerance for tight tolerances or a high ESR with a low ESR. All these changes are not problems.
So more is better, no? Well, not always. For instance, some voltage regulators could present oscillations if their filter capacitors deviate from the original capacitance, and the ability to respond to current transients worsen. On the other hand, it is not a good idea to replace a capacitor for a given voltage with another for a higher voltage. Making a parallel, if the show beams of a bridge section 20 × 20 and you use beams of 40 × 40 oversized that you only increases the safety factor and your bridge will be indestructible. Much more expensive and cumbersome, but safer. Now imagine you do the same with drawings of a circuit. The plane indicates capacitors to 10v and you think: "I am going to improve the design," and he put capacitors to 220v. Your circuit will work best? No, and indeed probably does not even work. The capacitors have a minimum operating voltage and if they put on a circuit where they operate unless the voltage design, you can not work or operating at barely, to deteriorate rapidly.
Ok, in these few paragraphs you tablets years of teaching in courses such as electromagnetic circuits, electromagnetism, electronics and repair of televisions applied by mail. All of the factors that have been mentioned interact to determine the size and shape of the capacitors.
And how to know if I have a capacitor in poor condition?
The easiest way to see if the capacitors are causing instability or failures in the PC is to look at them physically, we can find 2 cases, the first is when they are inflated and the second is when these leaves are liquid.
Bookmarks