4820P-2-222

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Resistor Networks, Arrays are essential in any circuit. A most common type of array is the 4820P-2-222. This is used in applications such as telecommunications, computer engineering and electronics. It is excellent for providing high resolution, low cost, and reliable performance.

The 4820P-2-222 array uses a resistor network comprised of two resistors. One is known as the series resistance and the other as the parallel resistance. Each resistance value is marked on the component\'s body for easy identification. The two resistors measure five watts each and have a tolerance of five percent.

The series resistance is the resistor connected in series with the supply and load. This resistor is used to limit the current and ensure that an over current does not occur. The parallel resistance is the voltage divider to regulate the voltage depending on the load current. The voltage can be amplified or reduced using the two resistors. In order to achieve the desired voltage, the two resistors should be in proportion to the value of the supply. This means that if the supply voltage is 9V, then the two resistors should have values of say, 2.2 ohms and 6.8 ohms.

The number of circuits that may be connected to this resistor array is limited by the power of the resistors. A one watt resistor can be used in up to three circuits while a five watt resistor is designed for up to eight circuits. The current for each circuit can then be determined by multiplying the power in watts with the voltage in volts to calculate the total current. This makes 4820P-2-222 array suitable for multiple circuits.

The impedance of the circuit is also affected by the resistor network. Impedance is a measure of opposition to current flow and is denoted by the letter ‘Z’. As the resistors are in series and parallel, the combined impedance of the circuit will be the sum of the resistances. This will affect the resistance, voltage, current and power of the circuit as resistance cannot be altered.

Finally, the 4820P-2-222 array can be used in many applications such as for protection of circuit components from voltage transients, stabilizing voltage supply for precision circuits, providing an adjustable voltage level or active damping of signals in circuits. This array is particularly helpful where a voltage must be regulated without inductors or capacitors which can be bulky and expensive.

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