Design of an Indigenised Electronic Lock-In Amplifier
Umesh Kumar
Active and Passive Electronic Components · 2000
doi:10.1155/apec.23.53 (opens in a new tab)
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Abstract
An indigenised lock-in amplifier is designed that enables the accurate measurement of signals contaminated by broad-band noise, power-line pick-up, frequency drift, or other sources of interference. It does this by means of an extremely narrow band detector which has the centre of its passband locked to the frequency of the signal to be measured. Large improvements in signal-to-noise ratio are achieved.
Abstract licence: CC BY
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