SPD73R-474M Inductors, Coils, Chokes

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Inductors are widely used in electronics circuits for their ability to store energy in the form of a magnetic field. Fixed Inductors are a type of inductor that has a fixed inductance and does not vary with applied voltage or current. The SPD73R-474M is one example of a fixed inductor, commonly used in switching power supplies, switched mode power supplies, and motor control circuits.

The SPD73R-474M is a chip bead-type inductor made of multiple wound ferrite-core wires. Its primary feature is its low DC resistance, which allows it to be used in circuits where the current is limited. It has a maximum operating temperature of 105°C and an inductance of 4.7 mH.

The SPD73R-474M is typically used in switching power supplies, where its low DC resistance allows it to handle high current without significant voltage drop. As part of a switching power supply, the inductor acts as a filter for the switching signals, allowing only the desired frequencies to pass. This helps reduce noise in the power circuit and prevents interference with other components. The SPD73R-474M can also be used in motor control circuits, where it helps smooth out the voltage during motor start-up, allowing for more precise control.

The SPD73R-474M is based on the principle of inductance. Inductance is the property of a circuit or device in which a change in current creates a corresponding change in magnetic flux. As current flows through the SPD73R-474M, it creates a magnetic field that induces a voltage in the opposite direction to the current. This voltage opposes any change in the current and helps maintain the flow of the current. This is known as the inductive effect.

The inductance of the SPD73R-474M can be measured by using an LCR meter. This device measures the inductance, resistance, and capacitance of a circuit. The inductance is measured in units of mH (millihenry) and is typically between 4.7 mH and 5.2 mH. The resistance is measured in ohms, and is typically between 14 and 20 ohms.

The SPD73R-474M is a fixed inductor with a low DC resistance and a high inductance, making it ideal for applications such as switching power supplies and motor control circuits. With its high maximum operating temperature, it is able to handle high current without significant voltage drop. It is also easy to measure its inductance using an LCR meter. The SPD73R-474M is a great component for any electronics project requiring a fixed inductor.

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