what does a smoke detector use in its light-sensitive diodes?

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Photodiode – Wikipedia

A photodiode is a semiconductor p–n junction device that converts light into an electrical current. The current is generated when photons are absorbed in …

smoke detector | Britannica

On sensing smoke the detectors emit a loud, high-pitched alarm tone, … the particles diffuse or scatter the light ray so it can be “seen” by the photocell …

US3676877A – Fire alarm system with fire zone locator using zener …

A fire alarm system having a plurality of detectors operably to actuate a … means sensing the specific zener diode voltage of an actuated detector in …

SOLVED:What does a smoke detector use in its lightsensitive

Well, it uses the fact that certain substances are easily excited and emit lightdiodes? electrons ultraviolet light photoelectrics None of the above.

System Smoke Detectors

Two basic types of smoke detectors are used today: ionization and photo– electric. The sensing chambers of these detectors use different principles.

Light Sensor including Photocell and LDR Sensor

The most commonly used photoresistive light sensor is the ORP12 Cadmium Sulphide … One simple use of a Light Dependent Resistor, is as a light sensitive …

What is a light sensor? Types, Uses, Arduino Guide – Latest Open …

8 Jan 2020 Since photodiodes are responsive to infrared light, it’s … from compact disc players to smoke detectors and even remote control devices …

An optical sensing approach based on light emitting diodes

The proposed sensing system employs one, two or more LEDs whereby each one can be used as a light emitter or light detector. The main advantages of the …

Si Photodiodes

15 Apr 2020 These Si photodiodes have sensitivity in the UV to near IR range. They are suitable for low-light-level detection in analysis and the like. (Typ …

What Is a Photoelectric Smoke Detector

26 May 2020 A photoelectric smoke detector is known for its use of light to give … there is a light-emitting diode and a lightsensitive sensor. The …

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