78F2R7K

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Fixed inductors are electronic components used for storing electrical energy in an electric field. They are widely used in power supplies, inverters, motor drives, amplifiers, loudspeakers, TV/radio receivers and many other applications. The 78F2R7K is a fixed inductor of a particular type, used for many applications.

The 78F2R7K is a cylindrical ferrite bead inductor with an uninsulated enameled wire winding. It is designed for effective suppression of RF noise in various electronic devices such as TV and radio receivers, audio amplifiers, and other circuits. It is also suitable for use in printed circuit boards (PCBs) and shielded enclosures for EMI protection. The wire is held onto the core by a binding post.

The 78F2R7K is capable of handling frequencies up to 1MHz. Its maximum rated current is up to 2A at frequencies below 250 kHz, and its maximum DC resistance is up to 0.7 Ohm. It is available in a variety of configurations ranging from 0.56uH to 6.8uH. The size of the devices is 2.2 x 2mm.

The 78F2R7K has a unique working principle. The ferrite core is made up of many small ferrite beads that interact with each other. The input signal is forced to pass through the inter-bead gap, which induces alternating magnetic flux inside the core. This magnetic flux, in turn, produces a current in the winding which is in phase with the input signal. As a result, the inductor creates its own magnetic field which opposes the input current, thus effectively suppressing EMI from the device.

The 78F2R7K is ideal for applications where the noise generated by the device needs to be suppressed or reduced. This includes applications like TV and radio receivers, audio amplifiers, motor drives, and power supplies. Its size and current rating make it perfect for use in PCBs and shielded enclosures. It is also relatively cost-effective, making it a great choice for budget-conscious users.

The 78F2R7K is a reliable and cost-effective fixed inductor for use in many applications. It is capable of handling frequencies up to 1MHz and can handle up to 2A of current. Its working principle relies on an alternating magnetic flux inside the core, which creates its own magnetic field, effectively suppressing EMI from the device. It is widely used in power supplies, inverters, motor drives, amplifiers, loudspeakers, TV/radio receivers and many other applications.

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