4420P-1-332

4420P-1-332 Application Field and Working Principle

The 4420P-1-332 model resistor network, sometimes called a resistor array, is a versatile wire-wound device designed to provide a high level of accuracy and power dissipation. It is typically used in applications where uniform, reliable, and accurate current division is required, such as in medical and process control systems. The 4420P-1-332 is designed for up to 120 watts of power dissipation and is manufactured with a variety of configurations, resistance values, and dielectric materials to provide maximum flexibility in application.

Design

The 4420P-1-332 resistor array typically consists of three resistors in series with each other and connected to larger copper bus bar at both ends. The resistor elements are uniform in size and distance between each other and are trimmed as required to ensure the desired level of accuracy and stability. The resistors are housed in a cylindrical, insulated case and are connected to the larger copper bars by means of a branching network.

Each of the copper bars typically has four terminals for making connections to other components. The terminals are either soldered or crimped to the copper bars, depending upon the customer’s requirements. The resistor array is designed and built to provide a degree of electrical isolation among the circuits connected and thus provide a safeguard against an unwanted ground fault.

Working principle

The 4420P-1-332 uses the principle of Ohm’s Law to provide the desired current division. According to Ohm’s Law, the current passing through each resistor element is inversely proportional to the amount of resistance offered by each element. Thus, by selecting the appropriate amount of resistance for each element, the desired current division can be achieved.

For example, if a single voltage source and two 4.7kΩ resistors are connected in series, the current passing through each resistor will be equal. However, if the resistors are connected in parallel, the current flowing through each resistor will be different, and the difference in current will be determined by the amount of resistance offered by each resistor.

The 4420P-1-332 resistor array works on the same principle. By selecting the desired amount of resistance for each element, the exact current division can be achieved. Thus, the resistor array can be used to provide a very precise current division.

Benefits

The 4420P-1-332 resistor array provides a number of advantages over traditional resistors. First, the resistor array provides a very stable current division over a wide range of operating conditions and temperatures. This makes it ideal for applications that require very high accuracy and reliability. Second, the resistor array provides a degree of electrical isolation among the circuits connected, which helps to provide a safeguard against an unwanted ground fault. Finally, the resistor array can be configured to provide a very high level of power dissipation, making it ideal for high power applications.

Conclusion

The 4420P-1-332 resistor array is a versatile and reliable device that provides a high level of accuracy and power dissipation. By using the principle of Ohm’s Law, the array is capable of providing precise current division. The array also provides a degree of electrical isolation among the circuits connected, which helps to prevent ground faults. Finally, the array is capable of providing a high level of power dissipation, making it ideal for high power applications.