In any electric circuit the resistor which, despite the small size, plays an important role in operation of the electric device is used. Also it is necessary to understand it as many do not know why the resistor in an electrical circuit is necessary. This passive element has variable or certain value of resistance which is used in electric and electronic devices. There are different versions of resistors, for example, elements of the general and special purpose to destination are allocated. High-resistance, high-voltage, high-frequency and precision resistors belong to the second group.
For what the resistor is necessary?
The resistor is intended for linear transformation of current to tension and vice versa. Still it can absorb electric energy, holding current and also it is capable to divide and reduce tension. Finding out for what the resistor in an electrical circuit is necessary, it is possible to put a certain end, that is use this element to receive desirable parameters of current.
Now we will talk about that, the resistor is used where exactly. Actually spheres of its application constantly extend, for example, it is in low-voltage devices and also in powerful plants.
Also interests many for what the resistor in a spark plug is necessary. Most often this element is used to reduce radio interferences. There are also candles in which the resistor is directed to restriction of current, consider the law of Ohm thanks to what the risk of combustion of a high-voltage winding at short circuit of an electrode of a candle on weight decreases.
In that why the resistor is necessary, understood, now we will consider still some useful information, for example, ways of connection of resistors in an electrical circuit. These elements can consistently be connected from other details included in network. The following option of connection – parallel, and in that case resistance is reciprocal value to rated value. There is a mixed connection.
Often electrical circuits fail because of malfunction of resistors. For this reason it is important to know, how exactly it is possible to check operability of this element. For holding a procedure it is necessary to have a multimeter which is established on measurement of resistance. The data obtained as a result of measurement are compared to the indicators specified on the case of the resistor. If they do not coincide, so elements it is necessary to replace.