THS7547RJ

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Chassis Mount Resistors: THS7547RJ Application Field and Working Principle

Chassis mount resistors are temperature-controlled resistors used to control the flow of electricity in circuits. The THS7547RJ is one of the latest additions to the family of chassis mount resistors, and it offers a number of advantages over its predecessors, including improved temperature stability and increased power dissipation. In this article, we\'ll explore the application field and working principle of the THS7547RJ chassis mount resistor.

Application Field

The THS7547RJ is a precision, high-precision thermistor-based chassis mount resistor, ideal for use in the automotive, industrial, and electronic device industries. Its accuracy and reliability make it an excellent choice for applications that require temperature measurement and control. The THS7547RJ also has a wide operating temperature range (-40°C to +125°C) and a wide voltage range (12V - 24V) making it suitable for a variety of applications. Additionally, the THS7547RJ has a low thermal coefficient of resistance (TCR) for improved temperature stability, and its integrated self-calibration algorithms allow for precise and repeatable measurements.

The THS7547RJ chassis mount resistor is particularly well-suited for engine control units, where its precision temperature measurements can be utilized to precisely adjust injection and ignition timing. Additionally, it can be used in voltage converters and multiplexers, as well as smart meters, sensors and other industrial equipment. It is also suitable for use in laboratory environmental testing, communications, medical equipment, and even consumer electronic devices.

Working Principle

The THS7547RJ works by using two resistors connected in parallel, the positive temperature coefficient (PTC) resistor and the negative temperature coefficient (NTC) resistor. The NTC resistor increases resistance with an increase in temperature, while the PTC resistor decreases resistance with an increase in temperature. The combined resistance of the two resistors forms a V-shaped response curve. As the ambient temperature increases, the NTC resistor\'s resistance increases, while the PTC resistor resistance decreases. This creates an overall decrease in resistance, allowing more current to flow through the system.

The THS7547RJ has a self-calibration algorithm built into it which can further enhance the accuracy and repeatability of the temperature measurements. The algorithm recalibrates the reference temperature point and adjusts the NTC and PTC resistor ratios, every 500 milliseconds, based on readings from a reference thermistor. This allows for precise temperature measurements every time, ensuring that the THS7547RJ is always ready to provide accurate and reliable temperature control.

Conclusion

The THS7547RJ is a high-performance chassis mount resistor that is suitable for use in a variety of applications. Its precision temperature measurements, wide voltage range, and self-calibration algorithm make it an excellent choice for automotive, industrial, and electronic device use. With its temperature stability and increased power dissipation, the THS7547RJ is a top-performance chassis mount resistor.

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