+++
title = "Signal Conditioner"
author = ["Thomas Dehaeze"]
draft = false
category = "equipment"
+++

Tags
: [Sensors]({{<relref "sensors.md#" >}}), [Electronics]({{<relref "electronics.md#" >}})

Most sensors needs some signal conditioner electronics before digitize the signal.
Few examples are:

-   Piezoelectric force sensors
-   Geophone
-   Photodiode
-   Thermocouple

The signal conditioning electronics can have different functions:

-   Amplification
-   Isolation
-   Filtering
-   Excitation
-   Linearization

Depending on the electrical quantity that is meaningful for the measurement, different types of amplifiers  are used:

-   Current to Voltage ([Transimpedance Amplifiers]({{<relref "transimpedance_amplifiers.md#" >}}))
-   Charge to Voltage ([Charge Amplifiers]({{<relref "charge_amplifiers.md#" >}}))
-   Voltage to Voltage ([Voltage Amplifier]({{<relref "voltage_amplifier.md#" >}}))