In dictionaries:
lie detector
Device analyzing truthfulness through physiology.
metal detector
Device for locating metal objects.
Phase detector
A phase detector or phase comparator is a frequency mixer, analog multiplier or logic circuit that generates a signal which represents the difference in phase between two signal inputs.
smoke detector
Device that senses and alerts smoke.
radiation detector
Device that measures emitted radiation.
scintillation detector
Device detecting radiation through flashes.
motion detector
A device used in security systems that can alert the user of the presence of a moving object.
leak detector
Device identifying presence of leaks.
Infrared detector
An infrared detector is a detector that reacts to infrared radiation.
Envelope detector
(electronics) An electronic circuit that takes a relatively high-frequency amplitude modulated signal as input and provides as output the demodulated envelope of the original signal.
diode detector
Crystal detector
Device that detects radio signals.
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