EDN

Design a DSP lock-in amplifier, Part 1: Background

Lock-in amplifiers let you measure very small signals that would otherwise get lost in the noise of even the best available amplifiers. Originally analog circuits, lock-in amplifiers have evolved into ...
EDN

Design a DSP lock-in amplifier, Part 2: Design methodology

In Part 1, I discussed the background behind lock-in amplifiers. Here, I’ll cover analog and digital lock-in amplifiers, software-defined radio, de-embedding, and the hardware and software ...
Hackaday

Lock In Amplifiers

If you have about an hour to kill, you might want to check out [Shahriar’s] video about the Stanford Research SR530 lock in amplifier (see below). If you know what a lock in amplifier is, it is still ...
AZOM

The UHFLI Lock-In Amplifier Frequency Range of DC to 600MHz

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