AHA500FB-8R25

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Chassis Mount Resistors, such as the AHA500FB-8R25, are one of the most basic electronic components used to maintain a constant current or voltage flow in electrical circuits. They are commonly used in a variety of applications, from limiting peak voltages, controlling and stabilizing large currents, filtering noise, and providing EMC shielding, to maintaining a constant bias voltage or power for a wide range of electronic components. The AHA500FB-8R25 is a 25 ohm, 1/2 watt, chassis mount resistor that features a weldable lug with 3/8” high post terminals for secure mounting.

Application Field

The AHA500FB-8R25 is a chassis mount resistor commonly used in applications where high power and/or fast response time are required. It is often used in industrial controls, motor controls, power supplies, regulated power converters, transformers, and other similar applications. It offers high reliability, high current carrying capacity, and low impedance, making it ideal for use in power systems.

Working Principle

A resistor is a device that restricts the flow of electric current. It is a passive two-terminal electrical component considered a basic building block in electrical and electronic circuits. When an electric current passes through a resistor, a voltage drop occurs across its leads. This voltage drop is proportional to the amount of current passing through the resistor. This voltage drop is known as the “resistance” of the resistor. The AHA500FB-8R25 is a 25 ohm resistor, which means that it will cause a voltage drop of 25 volts when a current of 1 ampere passes through it.

In its simplest form, the AHA500FB-8R25 is a fixed value resistor with a single resistance value. In some applications, such as in power supplies or other regulated circuits, the AHA500FB-8R25 can be used to create a variable resistance by using additional components, such as potentiometers or trimmers. A variable resistor allows for adjustments to be easily made to optimize performance in specific applications.

In addition to controlling the current in a circuit, resistors can also be used to dissipate power, or to convert electrical energy into heat. This process is known as “dissipation” and is useful in applications where it is necessary to dissipate heat, such as in power supplies, light dimmers, and LED drivers. The AHA500FB-8R25 can be used in this manner, as its weldable lug and 3/8” high post terminals allow for secure mounting to an existing chassis.

The AHA500FB-8R25 also can be used as a safety device to protect other components in a circuit from damage due to overload. This is accomplished by connecting the component in parallel with the load component, reducing the current flow in the line and protecting the more sensitive components from damage.

The AHA500FB-8R25 is a reliable and cost-effective chassis mount resistor that is well-suited for a variety of applications requiring high power and/or fast response time. Its features, such as its weldable lug and 3/8” high post terminals, make it an ideal choice for use in motor control, current regulation, and noise filtering. Its ability to provide protection from overload makes it a valuable component for circuit protection.

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