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. More.
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. More.
Ultra-low Noise Amplifiers
SA series are know as ultra-low noise ampliiers, and there are two
main technologies employed in our model SA-230F5 and SA-430F5. Here we will introduce you both of them, which are bias-stabilization technology and active input impedance.More.
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