D12K7K5E

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Adjustable Power Resistor

Adjustable power resistors are devices in which a moderately large resistance value can be electronically controlled to provide variable resistance to a circuit. The most common of these devices, the D12K7K5E, is of the type generally referred to as variable resistive elements. These devices are available in many different shapes and sizes. The D12K7K5E is a good example of today\'s adjustable power resistors.

The D12K7K5E adjustable power resistor contains a resistor element, unconnected to the outside circuit, located at the center of the device. The resistance element is connected to two adjustable contacts, one at each end of the device. The position of the contacts along the element determines the resistance value of the element. By adjusting the position of the contacts, the value of the resistor can be varied. This allows for precise voltage and current control within the circuit.

These adjustable power resistors are mainly used in applications requiring variable voltage or current control. These include voltage and current regulation, power supply pre-regulation, automotive control systems, electropneumatic and electrohydraulic controllers, lighting ballasts, and dimmers. They can also be used to stabilize, limit, or regulate the electrical current or voltage in a system.

One advantage of D12K7K5E adjustable power resistors is their high voltage operation range. This allows them to be used in a wider range of applications, including those with higher power input and output levels. Additionally, they offer very precise resistance adjustments, making them suitable for applications in which accurate voltage and current control is required. Their high voltage range also makes them ideal for low resistance applications like short circuit protection.

The operating principle behind the D12K7K5E is simple. The contact setting determines the resistance value of the element, which affects the current and voltage in the circuit. By adjusting the position of the contacts, the resistance value can be adjusted, allowing for precise voltage and current regulation. Given the high voltage range and precise control, this adjustable power resistor is a very versatile and useful tool.

In conclusion, the D12K7K5E adjustable power resistor is a useful device for applications that require variable voltage and current control. It offers a wide range of adjustable resistance values and can be used for applications ranging from automotive control systems to regular power supply pre-regulation. The device is also highly precise, allowing for precise regulation and control of voltage and current in the circuit.

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