A rheostat is a type of variable resistor that is used to control current and vary the resistance in a circuit with no interruptions. They are built similarly to potentiometers, but rheostats use two connections, regardless of whether there are more than two terminals present or not, unlike a potentiometer. The first connection is at the end of the resistive element and the second connection is attached to the wiper which is a sliding contact. Rheostats always carry a substantial current; therefore, they are built to be wirewound resistors which consist of resistive wires wrapped around an insulating ceramic center and a wiper that slides over the windings.
Power surges are common events that may occur over 50 times a day in a given power system. While the vast majority of these surges are minor and do not pose any threats to devices, those which are greater in magnitude may cause serious damage or even complete destruction to associated electronics. To help attenuate the impact caused by transient overvoltage, distributors and end-users implement surge protection into their systems. Surge protection is facilitated by specialized components called surge protection devices, or SPD. SPDs are designed to limit the voltage reaching an electronic device by blocking or shorting the current. Such strategies may be met by the use of inductors, metal-oxide varistors, spark gaps, or gas discharge tubes. In this blog, we will focus on gas discharge tubes and what factors must be considered when deciding upon one.
One of the more notable pieces of engineering that makes complex power distribution easier and more affordable is busbars. Generally housed inside switchgears, panel boards, or busways, busbars serve to conduct an ample current of electricity. Instead of branching the main power supply at one location, busbars enable new circuits to branch off anywhere along the busway.
Pressure regulators have numerous applications in industrial and consumer markets, but their importance is most significant in industrial automation and aviation. At the most general level, a pressure regulator is a device that helps control the pressure of a fluid to a set level. However, the means by which the regulator achieves that goal may vary significantly with design, making it essential to understand the fundamentals of pressure regulation first. In this blog, we will discuss the basic operating principles of pressure regulation and the various ways these devices may be implemented in industrial automation and aerospace applications.
Pressure transducers convert pressure into an electrical output signal that is either digital or analog. This signal can be used by other devices, such as controllers, alarms, and other similar closed-loop systems. They find use in a wide range of residential and commercial applications like HVAC, pumps, vehicles, and aircraft, where a pressure measurement is necessitated.
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