SRF1306-501Y

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SRF1306-501Y Power Line Filter Modules

SRF1306-501Y is a power line filter module manufactured by CapXon Electronics Ltd. It is used for the filtering and shielding of power lines for electronic and electrical systems. The SRF1306-501Y has a wide operating frequency range of up to 1 GHz and contains four separate filter elements: L-type, pi-type, transformer and diode, each of which has its own application field and working principle.

L-Type Filter

The L-type filter consists of one inductor and one capacitor connected in series, forming an LC circuit. This type of filter is mainly used for attenuating common-mode noise in power lines, and can also be used for radio-frequency interference (RFI) protection. The working principle is based on the principle of inductance and capacitance. The inductor has an inductance that increases as the frequency increases and the capacitor has a capacitance that decreases as the frequency increases. When both are connected together in series in the LC circuit, the combination of inductance and capacitance acts as a low-pass filter, allowing low frequency signals to pass while attenuating or blocking higher-frequency noise signals.

π-Type Filter

The π-type filter consists of two inductors and two capacitors connected in the form of a π-circuit. It is mainly used for the attenuation of noise in differential-mode signals. The working principle is somewhat similar to the L-type filter, except that in the π-type filter the inductors and capacitors are connected in parallel in the π-circuit. As with the L-type filter, the combination of inductance and capacitance acts as a low-pass filter, allowing low frequency signals to pass while attenuating or blocking higher-frequency noise signals.

Transformer Filter

The transformer filter consists of a transformer core, primary and secondary windings, and a resistor connected in a series-parallel configuration. It is mainly used for the attenuation of high frequency noise in power lines, and can also be used for RFI protection. The working principle is based on the principle of electromagnetic induction. The transformer core acts as an electromagnetic shield to block high-frequency noise signals, while the resistor reduces high-frequency noise in the differential-mode. The transformer also acts as an impedance transformer, which helps to reduce differences between the source and load impedances.

Diode Filter

The diode filter consists of a diode bridge connected in series with a resistor. It is mainly used for the attenuation of noise in differential-mode signals. The working principle is based on the principle of rectification. When a signal is applied to the diode bridge, the diode conducts the signal, allowing the current to flow through the resistor, thus attenuating the noise. The resistor also acts as an impedance transformer, helping to reduce differences between the source and load impedances.

Therefore, the SRF1306-501Y power line filter module is an effective solution for suppressing various high frequency noises in power lines. The four filter elements (L-type, π-type, transformer, and diode) each have their own application field and working principle, making the SRF1306-501Y suitable for a variety of applications.

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