UTMEL
We are the professional distributor of electronic components, providing a large variety of products to save you a lot of time, effort, and cost with our efficient self-customized service. careful order preparation fast delivery service
Sort by
Introduction to TRIAC and TRIAC Dimmer10 September 2020
TRIAC is developed based on ordinary thyristors. It can not only replace two thyristors connected in parallel with reverse polarity, but also only needs one trigger circuit, which is an ideal AC switching device...
Multivibrator: Circuits, Types and Application08 September 2020
A multivibrator uses deep positive feedback, to turn on and off two electronic devices alternately through the resistance-capacitance coupling, thereby self-excites and generates a square wave output. It's often used as a square wave generator...
What are Programmable Logic Controllers?07 September 2020
Programmable Logic Controller(PLC) is an electronic system operated by digital operations, specially designed for application in an industrial environment. It uses a memory that can be programmed to execute instructions for storing logical operations and sequence control, timing, counting and arithmetic operations.
What is a Radar Sensor?04 September 2020
A radar sensor is a conversion device that can convert microwave echo signals into electrical signals. The radar sensing is a wireless sensing technology that extracts and discovers the target's position, shape, motion characteristics and motion trajectory by analyzing the received target echo characteristics.
Introduction to Voltage Stabilizer03 September 2020
A voltage stabilizer is a device that stabilizes the output voltage. The voltage stabilizer is composed of a voltage stabilizer circuit, a control circuit, and a servo motor. When the input voltage or load changes, the control circuit samples, compares, and amplifies, and then drives the servo motor to rotate to change the position of the carbon brush of the voltage stabilizer. The coil turns ratio is automatically adjusted to keep the output voltage stable.
What is Digital Counter?01 September 2020
Counting is one of the simplest basic operations. In digital logic and computing, the counter is the logic circuit that realizes this kind of operation. In the digital system, the counter mainly counts the number of pulses to realize the functions of measurement, counting, and control.
LED Driver: Function, Types, and Application01 September 2020
LED Driver refers to the power adjustment electronic device that drives LED light or LED module components work normally. Due to the conduction characteristics of the LED PN junction, the voltage and current range of the power supply it can adapt to is very narrow, and a slight deviation may not be able to light the LED, or the luminous efficiency will be seriously reduced, or the service life may be shortened or the chip may be burned.
Random Access Memory: Definition, Types and Working29 August 2020
Random Access Memory (RAM), also called main memory, is an internal memory that directly exchanges data with the CPU. It can read and write at any time (except when refreshing), and and is usually used as a temporary data storage medium for the operating system or other running programs. The biggest difference between it and ROM is the volatility of data, that is, the stored data of RAM will be lost once the power is off.
Introduction to TFT Displays29 August 2020
TFT Display is a thin film transistor type liquid crystal display. TFT liquid crystal is equipped with a semiconductor switch for each pixel, and each pixel can be directly controlled by dot pulses. So each node is relatively independent and can be continuously controlled, which not only improves the response speed of the display screen, but also allows precise control of displaying color gradation, so the color of TFT liquid crystal is truer.
Basic Introduction to Metal Film Resistor28 August 2020
Metal film resistors are a kind of film resistors. Metal film resistors are resistors in which special metals or alloys are used as resistor materials, and the resistor film layer is basically formed on ceramic or glass by vacuum evaporation or sputtering.
An Overview of Bipolar Transistors27 August 2020
Bipolar Transistor, full name bipolar junction transistor(BJT), is an electronic device with three terminals, made of three parts of semiconductors with different levels of doping. The charge flow in the transistor is mainly due to the diffusion and drift movement of carriers at the PN junction.
What is a Piezoelectric Sensor?26 August 2020
A piezoelectric sensor is a sensor based on the piezoelectric effect. It is a self-generating and electromechanical conversion sensor.