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pi filter

A pi filter is a filter with a high slope, which is much higher than that of normal filters. The name pi filter or pi element, also known as a Collins filter, is due to the pi-shaped arrangement of the reactances.

Pi filter

Pi filter

Depending on how the reactances are arranged, it can be a high pass or a low pass.

A pi-shaped low-pass filter is an interconnection of two LC filters: two capacitors with a series-connected coil of double inductance. As a high-pass filter, a pi filter consists of two inductors with a capacitance connected in series.

Pi filters are characterized by the high edge steepness and have no resonance points.

Englisch: pi filter
Updated at: 19.11.2019
#Words: 111
Links: filter, name, also known as (aka), line conditioner (power supply) (LC), coil
Translations: DE

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