Lock-in amplifiers are key components in many applications that require high resolution sensing. Aiming at the problem that the signal-to-noise ratio performance of traditional lock-in amplifier ...

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Mechanical latching relays incorporate internal locks or gears that hold the relay contacts in place after switching. A ...

The purpose of this work is to add one more circuit into the PLL to define the lock condition. New types of PLL lock detectors, the principles of their operation, parametrical comparisons are ...