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Low-cost electronic circuitry for photoacoustic gas sensing

The circuitry comprises a sine wave generator based on direct digital synthesis, a laser diode driver module, a band-pass frequency filter, a synchronous detector with phase adjustment circuitry and a low pass filter to form an analog lock-in amplifier, and an analog-to-digital converter. A 32-bit A...

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Detalles Bibliográficos
Autores principales: Keeratirawee, Kanchalar, Furter, Jasmine S., Hauser, Peter C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9058730/
https://www.ncbi.nlm.nih.gov/pubmed/35509926
http://dx.doi.org/10.1016/j.ohx.2022.e00280