exciter lamp

noun

Definition of exciter lamp

: a lamp whose light passes through the sound track of a motion-picture film and enters a photoelectric cell causing the current fluctuations that actuate the loudspeaker

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“Exciter lamp.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exciter%20lamp. Accessed 11 Jul. 2020.

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