lock-in amplifier

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lock-in amplifier [′läk‚in ′am·plə‚fī·ər]

(electronics)

An amplifier that uses some form of automatic synchronization with an external reference signal to detect and measure very weak electromagnetic radiation at radio or optical wavelengths in the presence of very high noise levels.

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No references found			The lock-in amplifier is controlled by a computer which sets the lock-in internal reference frequency and reads the resulting PMT signal. Modeling of photochemical reactions in a focused laser beam, II by Gaigalas, Adolfas K.; Hunt, Fern; Wang, Lili / Journal of Research of the National Institute of Standards and Technology The signal from the MCT-detector is fed first to a low-noise preamplifier and then through a lock-in amplifier and is finally recorded by the PC-computer system. A new rheometer measuring infrared dichroism in molten polymers ... by Skytt, M.-L.; Farnert, G.; Jansson, J.-F.; Gedde, U.W. / Polymer Engineering and Science The Agilent 5420 is also compatible with MAC Mode III, which provides three user-configurable lock-in amplifiers to afford virtually limitless application possibilities, unprecedented speed and the ability to use higher resonance modes of the cantilever. TRADE NEWS: Agilent Technologies Enhances Performance of Popular ... by Business Wire			lock front bevel lock gate Lock Haven lock jamb lock joint lock keeper lock manager lock miter Lock Nut lock plate lock primer lock rail lock reinforcement lock reinforcing unit lock seam lock seam door lock step lock stepping lock stile lock strike lock up lock washer lock, air lock, canal lock-in lock-in amplifier lock-on lock-strip gasket lock-up relay lockalloy lockband Locke Locke, Alain Le Roy Locke, Bessie Locke, David Rose Locke, David Ross Locke, John locked and loaded locked groove locked oscillator locked phone locked up locked-coil rope locked-in line locked-oscillator detector locked-rotor current locked-wire rope locker locker plant Lockerbie Locket			Lock Up Periods Lock Up Your Daughters Lock ups lock washer lock washer lock washer lock, air lock, air lock, canal Lock, Stock & Barrel Lock, Stock and Barrel Lock, Stock and Two Smoking Barrels lock, stock, and barrel lock, stock, and barrel lock, stock, and barrel lock, stock, and barrel lock, stock, and barrel lock, stock, and barrel lock, stock, and barrel Lock-and-key model (enzyme) Lock-and-key model (enzyme) Lock-and-key model (enzyme) Lock-down lock-gate Lock-in Lock-in Lock-in Lock-in lock-in amendment Lock-In Amendments lock-in amplifier lock-in clause lock-in period Lock-In Periods Lock-In Principal Lock-In Principals Lock-In Rate Lock-In Rates lock-ins lock-ins Lock-jaw Lock-jaw Lock-jaw Lock-Jumper Lock-Limit lock-on lock-on Lock-On After Launch Lock-On Before Launch Lock-On: Modern Air Combat lock-out lock-out lock-out lock-out Lock-Out Relay Lock-Outs Lock-Outs Lock-Outs Lock-Outs lock-stitch suture lock-stitch suture

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