Special resistors are a type of resistor that are designed for specific applications or requirements. These resistors are often used in specialized electronic circuits where standard resistors may not be suitable. There are several popular models of special resistors that are commonly used in various industries. In this article, we will discuss some of the popular models of special resistors and their applications.
2. Precision Resistors: Precision resistors are resistors that are designed to have very tight tolerances and low temperature coefficients. These resistors are used in applications where accuracy and stability are critical, such as in precision measuring instruments, medical devices, and aerospace equipment. Precision resistors are available in various configurations, including surface mount, through-hole, and chip resistors.
3. High Voltage Resistors: High voltage resistors are resistors that are designed to withstand high voltages without breaking down. These resistors are used in applications where high voltage levels are present, such as in power supplies, medical equipment, and industrial machinery. High voltage resistors are available in various voltage ratings and power ratings to suit different applications.
4. High Power Resistors: High power resistors are resistors that are designed to handle high power levels without overheating or failing. These resistors are used in applications where high power dissipation is required, such as in power amplifiers, motor drives, and industrial equipment. High power resistors are available in various configurations, including wirewound, thick film, and metal oxide resistors.
5. Variable Resistors: Variable resistors, also known as potentiometers, are resistors that have an adjustable resistance value. These resistors are used in applications where the resistance value needs to be varied manually, such as in volume controls, dimmer switches, and tuning circuits. Variable resistors are available in various types, including rotary, slide, and trimmer resistors.
6. Fusible Resistors: Fusible resistors are resistors that are designed to act as fuses in case of a fault or overload. These resistors are used in applications where protection against overcurrent is required, such as in power supplies, motor controls, and automotive electronics. Fusible resistors are available in various fuse ratings and resistance values to suit different applications.
7. Thermistors: Thermistors are resistors that have a resistance value that changes with temperature. These resistors are used in temperature sensing and compensation applications, such as in thermostats, temperature controllers, and automotive sensors. Thermistors are available in two types: negative temperature coefficient (NTC) thermistors, which decrease in resistance with increasing temperature, and positive temperature coefficient (PTC) thermistors, which increase in resistance with increasing temperature.
8. Surge Resistors: Surge resistors are resistors that are designed to withstand high voltage surges without failing. These resistors are used in applications where protection against voltage spikes is required, such as in surge protectors, lightning arrestors, and power distribution systems. Surge resistors are available in various surge ratings and resistance values to suit different applications.
In conclusion, special resistors are an essential component in many electronic circuits where standard resistors may not be suitable. The popular models of special resistors discussed in this article are just a few examples of the wide range of special resistors available in the market. Each type of special resistor has its unique characteristics and applications, making them indispensable in various industries. Whether it is for high power handling, precision accuracy, temperature sensing, or surge protection, special resistors play a crucial role in ensuring the proper functioning of electronic devices and systems.
