envelope detector, the product detector takes the product of the modulated signal and a local oscillator, hence the name. A product detector is a frequency...

called a detector. A variety of different detector devices, such as the coherer, electrolytic detector, magnetic detector and the crystal detector, were...

An envelope detector (sometimes called a peak detector) is an electronic circuit that takes a (relatively) high-frequency signal as input and outputs the...

A phase detector or phase comparator is a frequency mixer, analog multiplier or logic circuit that generates a signal which represents the difference in...

the limited frequency response of the headphones as the filter. The product detector multiplies the incoming signal by the signal of a local oscillator...

A metal detector is an instrument that detects the nearby presence of metal. Metal detectors are useful for finding metal objects on the surface, underground...

frequency of an input signal as in a receiver, but also as a product detector, modulator, phase detector or frequency multiplier. For example, a communications...

directly. Electronics portal Variable-gain amplifier Ring modulator Product detector Frequency mixer Companding Squelch Analog computer Analog signal processing...

A carbon monoxide detector or CO detector is a device that detects the presence of the carbon monoxide (CO) gas to prevent carbon monoxide poisoning....

diode which is configured to act as envelope detector. Another type of demodulator, the product detector, can provide better-quality demodulation with...

A smoke detector is a device that senses smoke, typically as an indicator of fire. Smoke detectors/Alarms are usually housed in plastic enclosures, typically...

A crystal detector is an obsolete electronic component used in some early 20th century radio receivers that consists of a piece of crystalline mineral...

lipids, natural products, biofuels, sugars and surfactants. The CAD, like other aerosol detectors (e.g., evaporative light scattering detectors (ELSD) and...

objects in its field of view. They are most often used in PIR-based motion detectors. PIR sensors are commonly used in security alarms and automatic lighting...

frequency-shifted down to its original range of baseband frequencies, by using a product detector which mixes it with the output of a beat frequency oscillator (BFO)...

segmented detectors with add-back (see: clover (detector)). The voltage pulses produced for every gamma ray that interacts within the detector volume are...

assessed. Other detectors include the Hall electrolytic conductivity detector (ElCD), helium ionization detector (HID), infrared detector (IRD), photo-ionization...

A radar detector is an electronic device used by motorists to detect if their speed is being monitored by police or law enforcement using a radar gun....

(uses a BFO and a product detector. The BFO might be tunable) Morse code continuous wave (CW) - (uses a BFO and a product detector. The BFO might be tunable)...

detector. There are two key aspects to effective neutron detection: hardware and software. Detection hardware refers to the kind of neutron detector used...

obtained from a superheterodyne receiver using synchronous detection (a product detector) following an intermediate frequency (IF) stage. To match the performance...

shock detector is triggered but there is no damage to a product or no injury to a person. Likewise false negatives are also possible. Shock detectors are...

A gas detector is a device that detects the presence of gases in an area, often as part of a safety system. A gas detector can sound an alarm to operators...

a discriminator, ratio detector, or phase-locked loop. Continuous wave and single sideband signals require a product detector using a so-called beat frequency...

from 6 to 6.5 MHz. Introduced in 1962 at a price of $379.95, it had a product detector for SSB, a notch filter, and selectable bandwidth of 0.5, 2.5, and...

is audible in the headphones. The valve acts as a self-oscillating product detector. Another, very similar application of the bi-grid valve was as a self...

and hence the wavelength of the emitted optical photon. A scintillation detector or scintillation counter is obtained when a scintillator is coupled to...

An aspirating smoke detector (ASD) is a system used in active fire protection, consisting of a central detection unit which draws air through a network...

Reference Design" (PDF). Texas Instruments. Retrieved 26 August 2017. Elliott Sound Products Application Notes : Zero Crossing Detectors and Comparators...

A grid leak detector is an electronic circuit that demodulates an amplitude modulated alternating current and amplifies the recovered modulating voltage...