4222R

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Ferrite Beads and Chips are electronic components typically used as attenuators, filters, and noise absorbers. The 4222R is one of the Ferrite Beads and Chips most commonly used for radio frequency interference suppression. It is a high-impedance inductor, making it an ideal choice for use in various electronic devices.

The 4222R is a 47 Ω series resistor, which, when combined with a 43 Ω bypass capacitor, improves the power supply stability of a device at high frequencies. This series resistor and bypass capacitor combination, along with the inductor, form the core components of the 4222R. The 4222R also consists of an on-resistance switch, which allows the user to bypass the resistor when low-impedance circuits are present.

The 4222R’s primary application field is in radio frequency interference (RFI) suppression, which is the process of reducing or eliminating interference caused by electromagnetic radiation or radio waves. Its working principle is based on the effect of an inductor, a ferrite bead, or a combination of both in series with the power supply line, which works to reduce high frequency noise that can interfere with electronic devices. The object is to convert the high frequency noise into a low frequency noise, which can then be eliminated.

The 4222R operates by utilizing an inductor with a ferrite bead, which has the ability to absorb high frequency noise. This is done by converting high frequency signals into a low level of impedance, which is then passed through the inductor and dissipated into the ferrite bead to reduce the noise. The object is to absorb the energy of the offending high frequency signals while passing the low frequency signals through it.

The 4222R is also commonly used to reduce radiated emissions from electronic devices. This is achieved by placing the 4222R in a suitable location between the power line and the device. The object is to absorb the high-frequency emissions from the device, thus preventing them from entering the power line and reaching other devices.

The 4222R is, therefore, an important tool for reducing noise and eliminating RFI in electronic devices. Its ability to convert high frequency signals into low frequency signals makes it an ideal choice for suppressing RFI in various electronic devices. Its versatility and ease of use make it an excellent choice for a variety of applications.

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