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Preamplifiers

What is a preamplifier?

The Improvements of signal-to-noise ratio (SNR) is very important in small signals measurements. And preamplifiers are used to amplify signals when they are affected by noise, generally in sensor-based measurements, where the purpose is to improve the SNR. Yet, on the other hand, preamplifiers are sometimes used to change the output impedance of sensors as well.

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Preamplifiers

What is a lock-in amplifier?

The lock-in amplifier measures the amplitude and phase of an AC signal by combining a PSD (phase sensitive detector) and LPF (low-pass filter). Enter an AC "reference signal" and measure only signals of the same frequency. Even if the measurement signal contains AC noise, it is possible to remove the noise and measure the wanted signal only at the specific target frequency.

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For specialist of extremely small signal measurement

World's top-level, extremely low-noise amplifier
Amplifies extremely small signals voltage or current
For measuring signals "I wanted to measure" or "I could not measure."

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Multi channel low noise amplifier

High precision signal processing for both low impedance sensor and high impedance sensor.
Bipolar input: 1.3nV√Hz
FET input: 2.5nV√Hz

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