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Electronics & Semiconductor

Crystals and Oscillators

Crystals and oscillators are frequency-control devices in which a high-Q piezoelectric resonator sets the spectral selectivity and a sustaining circuit converts that selectivity into a stable periodic electrical signal. In common usage a “crystal” denotes the sealed piezoelectric resonator alone, typically a quartz element with electrodes inside a hermetic package, whereas an “oscillator” denotes a complete module that incorporates the resonator with an active amplifier,…

Types
Crystal Resonator · Crystal Oscillator
Applications
Mobile Devices · Automotive Electronics · Wearable Devices

5 editions28 December 2025

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Electronics & Semiconductor

Thyristor Discs

Types
Gate-Controlled Thyristors · Light-Triggered Thyristors · Reverse Conducting Thyristors
Applications
Energy Systems · Transportation · Industrial

5 editions4 January 2026

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Electronics & Semiconductor

UV Light Disinfection

UV (Ultraviolet) Light Disinfection refers to the process that is used to sterilize the water, air, food and beverage and others. UV disinfection equipment uses UV light for the disinfection process and does not involve the usage of chemicals. Hence, UV disinfection is considered more user-friendly and eco-friendly than other types of disinfection equipment. UV light has become an established water treatment disinfection technology due to its extremely effective ability to…

Types
Ordinary Cathode Low Pressure Mercury UV Disinfection · High-intensity Ultraviolet Disinfection · Ozone UV Disinfection
Applications
Drinking Water and Wastewater · Air and Surface · Food Processing

5 editions25 December 2025

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Electronics & Semiconductor

Mobile Phone Design

Types
Phone Hardware Design · Phone Software Design · Others
Applications
Android System Mobile Phone · IOS System Mobile Phone · Window System Mobile Phone

5 editions4 March 2026

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Electronics & Semiconductor

NTC Thermistors

An NTC (Negative Temperature Coefficient) thermistor is a ceramic semiconductor made with various metal oxides. Their electrical resistance decreases with increasing temperature. A typical temperature range for existing ceramic negative temperature coefficient (NTC) thermistors is -80 degrees C to +300 degrees C. This resistance is processed by an electronic circuit to provide temperature measurement. The thermistor itself does not provide any control over heating elements,…

Types
Radial Type · Diode Type · Wire Bonding Type
Applications
Consumer Electronics · Medical Instruments · Automotive

5 editions20 December 2025

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