Power supply filters

Provide low-noise supply rails for your critical setups

Single-rail PSU filters

The filters are designed to give high attenuation of power supply noise over varying loads. The filters are ready for assembly on optical boards with 25 mm or ¼” grid. Versions with or without common-mode suppression are available.

Single rail, non-polarized

This is our standard filter for suppressing noise from power supplies. According to our experience the attenuation and the output impedance fit the majority of applications. Being non-polarized, you may use the filter for any polarity. The filter does not include common-mode suppression, but instead, the input and out neutral pins are directly connected.

Single rail, low-Z, polarized

This is a low-impedance version of our single-rail supply filter. Thanks to the use of high-grade electrolytic capacitors with low ESR the output impedance of the filter is reduced compared to our standard version. However, you need to use the filter for positive voltages relative to the neutral connection. As an option, the filter can be delivered for a negative polarity. The filter does not include common-mode suppression, but instead, the input and out neutral pins are directly connected.

Single rail, non-polarized, with CM suppression

This is our standard filter for suppressing noise from power supplies, and with common-mode suppression included. According to our experience the attenuation and the output impedance fit the majority of applications. Being non-polarized, you may use the filter for any polarity.

Single rail, low-Z, polarized, with CM suppression

This is a low-impedance version of our single-rail supply filter, and with common-mode suppression included. Thanks to the use of high-grade electrolytic capacitors with low ESR the output impedance of the filter is reduced compared to our standard version. However, you need to use the filter for positive voltages relative to the neutral connection. As an option, the filter can be delivered for a negative polarity. 

Dual-rail PSU filters

The filters target symmetrical supplies, and are available with or without common-mode suppression.

Dual rail, non-polarized

This is our standard filter for suppressing noise from dual power supplies. According to our experience the attenuation and the output impedance fit the majority of applications. Being non-polarized, you may use the filter for any polarity. The filter does not include common-mode suppression, but instead, the input and out neutral pins are directly connected.

Dual rail, low-Z, polarized

This is a low-impedance version of our dual-rail supply filter. Thanks to the use of high-grade electrolytic capacitors with low ESR the output impedance of the filter is reduced compared to our standard version. You need to use the filter for positive and negative voltages relative to the neutral connection as indicated on the filter. The filter does not include common-mode suppression, but instead, the input and out neutral pins are directly connected.

Dual rail, non-polarized, with CM suppression

This is our standard filter for suppressing noise from dual power supplies, and with common-mode suppression included. According to our experience the attenuation and the output impedance fit the majority of applications. Being non-polarized, you may use the filter for any polarity.

Dual rail, low-Z, polarized, with CM suppression

This is a low-impedance version of our dual-rail supply filter, and with common-mode suppression included. Thanks to the use of high-grade electrolytic capacitors with low ESR the output impedance of the filter is reduced compared to our standard version. However, you need to use the filter for positive and negative voltages relative to the neutral connection as indicated on the filter. 

Get in contact with Apparateq

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Apparateq ApS

Fuglegårdsvænget 30, DK-2820 Gentofte, Denmark

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+45  26596544