Parallel connection of resistors.

Parallel connection of resistors is used to reduce resistance and / or increase power dissipation. The total resistance of two resistors connected in parallel is less than the resistance of the smallest of them. In the simplest case, if the resistances of the resistors are equal, then the total resistance is 2 times less.

Online calculator for calculating the resistance of two resistors connected in parallel, allows you to find:
- Total resistance of two parallel-connected resistors;
- Resistance of one of the parallel-connected resistors in terms of the total resistance and the resistance of the other resistor;
- Diverse graphs of all combinations of required quantities and axes.

A resistor parallel connection is an electrical circuit in which two or more resistors are connected in parallel between two points in a circuit. In parallel connection of resistors, each resistor has its own connection to the input and output points of the circuit, i.e. the input and output current is shared between them.

When resistors are connected in parallel, their total resistance is reduced compared to the resistance of each resistor individually. This is because when the resistors are connected in parallel, the total circuit current is divided among all the resistors, which means that each resistor will have less current than if it was connected in the circuit by itself.

The total resistance of resistors connected in parallel can be calculated using the formula: 1/Rtot = 1/R1 + 1/R2 + ... + 1/Rn, where R1, R2, ..., Rn are the resistances of each resistor in parallel connection, and Rtot is the total resistance.

The parallel connection of resistors has many applications in electrical and electronic engineering. One example of using resistors in parallel is to create a voltage divider. A voltage divider is a parallel connection of two resistors, which is used to obtain a reduced voltage at the output of the circuit. Another example of using resistors in parallel is dimming LEDs in LED lamps.

However, there are some problems when using resistors in parallel. For example, uneven resistor values can lead to uneven current distribution between them, which can lead to overheating and damage to the resistors. In addition, when using a large number of resistors in parallel, there may be a problem with current controllability and complexity of calculations.

To reduce the effect of uneven resistor values, you can use resistors with high accuracy or select resistors with similar resistance values. You can also use special current control circuits, such as current amplifiers or transistor switches, to ensure an even distribution of current between the resistors.

In conclusion, the parallel connection of resistors is an important electrical circuit that is widely used in electrical engineering and electronics. Understanding how resistors are connected in parallel and its applications is essential to designing efficient and reliable electronic devices. In addition, when using a parallel connection of resistors, it is necessary to take into account possible problems, such as uneven resistance values and the complexity of current control. By following the recommended resistor selection and the use of special current control circuits, it is possible to ensure reliable and efficient use of parallel connection of resistors in various electronic devices.
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