transformer-Power Management-8-EEWORLD

2 3 4 5 6

Huawei's new breakthrough in solid-state batteries: sulfide electrolyte patent released to solve the problem of liquid battery attenuation

Latest

Cause Analysis and Preventive Measures for Magnetic Bias Problem of Inverter Power Transformer: Different from the working condition of ordinary transformers, inverter transformers are prone to magnetic bias, which is a unique phenomenon of inverter transformers. This is because when there is a DC component in the magnetic induction intensity in the transformer core, the positive and negative half-waves of the magnetic induction intensity are asymmetric, or biased upward or downward. This phenomenon is called transformer......; Keywords： Inverter Transformer
Publish Time：2013-12-18

Selection and testing methods of switching power supply transformers: 1. Check the transformer for any obvious abnormalities by observing its appearance. For example, whether the coil lead is broken, desoldering, whether the insulation material has burnt marks, whether the core fastening screw is loose, whether the silicon steel sheet is rusted, whether the winding coil is exposed, etc. 2. Insulation test. Use the multimeter R×10k to measure the core and the primary......; Keywords： Switching power supply transformer
Publish Time：2013-12-18

Comparison of multi-detector electromagnetic scanning systems with a single handheld detector: The main purpose of any electromagnetic scanning technology application is to help designers understand the electromagnetic characteristics of their circuit boards as much as possible, so as to optimize the design in terms of functionality and compatibility. In addition, designers also hope that all their research and modification behaviors on the circuit board can be fully archived. Time to market is very important for products......; Keywords： Multi-detector electromagnetic scanning
Publish Time：2013-12-18

Changing the transformer connection method can eliminate certain harmonics: Configuring a transformer with different input-output connection methods in the system can eliminate certain harmonics of certain orders. This has been successfully applied in single-phase and three-phase input UPS systems. (1) Using Δ-type/Y-type transformers can eliminate the third harmonic. Current computer switching power supplies (SMPS) and other single-phase rectifier input devices (including......; Keywords： Transformer Harmonics
Publish Time：2013-12-18

The claim that UPS output transformer can resist interference is pointless.: 1. Introduction According to the law of historical development, the current transition period is when high-frequency UPS replaces industrial frequency UPS. During this period, the output transformer that has been ignored by people before has become a "hot commodity". The main reason is: it is said that this transformer can resist interference. Therefore, not only the transformer of industrial frequency UPS......; Keywords： UPS Transformer
Publish Time：2013-12-18

Transformer design experience summary: 1. Transformer Principle When we insert a wire into a 220V power socket, a short circuit will occur, but when we insert a transformer, there will be no such thing. The difference is that the coil wire of the primary side of the transformer is wound on the iron core. Does the wire lose its short-circuit function just because there is an extra iron core? Yes, the wire becomes an inductor coil after being inserted into the iron core......; Keywords： Transformer Design
Publish Time：2013-12-18

MCU and CPLD interaction transformer system test has a good way: 1 Introduction BX signal transformer, BG track transformer and ZG silicon rectifier are the front end of railway signal electrical equipment. Their working stability and accuracy are directly related to driving safety. Reliable detection of transformer is the first step to strictly control quality. For manufacturers, sampling is not allowed in the test process, and the test results should be archived. ......; Keywords： MCU CPLD Transformer
Publish Time：2013-12-18

"Demagnetization Dynamic" Method Test Based on DSP Transformer DC Resistance: 1 Introduction Transformer winding DC resistance test is one of the main items of transformer factory and preventive test. According to IEC standard and national standard GB1094, transformers must be tested during manufacturing, after overhaul, acceptance test and preventive test, as well as the determination of winding average temperature rise and fault diagnosis. In recent years......; Keywords： DSP Transformer DC Resistor
Publish Time：2013-12-18

How to Design a Transformer-Coupled Front End for High-Performance Analog-to-Digital Converters: The design of systems using high-speed analog-to-digital converters (ADCs) with high input frequencies (IFs) has always proven to be a challenging task. The use of transformers makes this task even more difficult because transformers have inherent nonlinearities that can result in substandard performance. This article discusses......; Keywords： Analog-to-digital converters transformers coupled type
Publish Time：2013-12-17

Installing an isolation transformer can effectively reduce the UPS neutral voltage: Some loads installed by users (such as HP minicomputers, IBM servers, etc.) have higher requirements for the UPS output neutral voltage, which is generally required to be <1V. However, during the actual project installation and startup commissioning, it was found that the output neutral voltage measured when the UPS was not turned on still met the requirements, but the output neutral voltage measured after the UPS was turned on would be......; Keywords： Isolation transformer UPS neutral voltage
Publish Time：2013-12-17

Adaptive Optimization Algorithm for Ultrasonic Localization of Partial Discharge in Transformers: During the process, when some weak parts of the internal insulation have partial discharge under the action of high field strength, ultrasonic energy is released, and spherical ultrasonic waves propagate outward in different media. Sensors at different points outside the transformer can receive ultrasonic signals and transmit them to the background through the GPRS network. The background measures the delay of ultrasonic signal propagation and combines......; Keywords： Transformer ultrasonic positioning
Publish Time：2013-12-17

Experience in Winding High Frequency Transformer for Switching Power Supply: 1. Use the dedicated transformer design software PIXls Designer and PI Transformer Designer to input the required parameters, such as input voltage range, output voltage requirements, bias voltage, transformer estimated power, power factor, rated load, number of primary coil layers, number of secondary coil turns, etc. PI software......; Keywords： Switching power supply high frequency transformer
Publish Time：2013-12-17

Working principle and protection of power transformer: 1 Overview Transformer is a kind of static electrical equipment made according to the principle of electromagnetic induction. It is used to convert low voltage into high voltage or high voltage into low voltage. It is an important electrical equipment in AC power transmission and distribution system. When the transformer is closed, a large current may be generated. This article mainly discusses the generation and influence of this current. 2 Excitation inrush current......; Keywords： Power transformer working principle
Publish Time：2013-12-06

Calculation Methods for Designing Current Transformers for Power Supplies: 　　Current transformers measure current or transfer energy from one circuit to another, so their design requires different calculations than the corresponding voltage transformers. The reason for this difference is that the current that a current transformer magnetizes is the load current itself, while a voltage transformer is different, and the current it magnetizes is "independent" of the load current....; Keywords： Power supply transformer
Publish Time：2013-11-20

A brief discussion on the selection of transformer forward active clamp: 　　The forward active clamp circuit topology is currently widely used in 50W-600W module power supplies in the domestic communication industry. In high-power density module power supplies, synchronous rectification technology has become a necessary choice, and the main performance advantage of the forward active clamp is that it provides a very ideal driving waveform for the synchronous rectification of the winding self-driven......; Keywords： Transformer Active Clamp
Publish Time：2013-11-19

Common faults and maintenance techniques of transformer bushings: 　　Introduction: Transformer is an electrical device used to change voltage and current. The lead wire of transformer winding is led out of the box by bushing. The bushing plays the role of insulating and fixing the oil tank and transmitting current to the outside of the box. It needs to adapt to various environmental conditions and have a certain mechanical strength. It is a main part of the transformer......; Keywords： Transformer maintenance tips
Publish Time：2013-11-16

Key points and methods for selecting the best DC/DC converter: 　　Introduction: DC-DC power converter converts a fixed DC voltage into a variable DC voltage. This technology is used in a wider range of applications. DC-DC converter is one of the most commonly used functional circuits in communication equipment. Its quality and efficiency directly affect the normal operation of communication equipment. This article introduces the selection of......; Keywords： DC/DC Converter
Publish Time：2013-11-16

Transformerless AC power to power the circuit: This is another form of transformerless AC power supply, which can be used in some low-power devices with good thermal insulation. Our technical reviewer believes that Cac should be of X-level safety type; I think it would be better if there is no ground mark. The switch mode power supply (SMPS) circuit can effectively reduce the AC power of the mains to meet......; Keywords： Transformer-less AC power supply power supply
Publish Time：2013-10-16

Brief Introduction to LLC Transformer Design Experience: Applicable to LLC transformer, characterized by comprising: a first MOS switch tube, a second MOS switch tube, a first capacitor, an inductor and at least two transformers; the primary sides of the transformers are connected in series and the secondary sides are connected in parallel; after the first MOS switch tube and the second MOS switch tube are connected in series, the midpoint thereof is connected to the primary side of the transformer in turn through the first capacitor and the inductor......; Keywords： LLC Transformer Design Experience
Publish Time：2013-09-14

Regulating Line Voltage with Filament Transformers: Problem: I couldn't use a Heathkit oscilloscope in the home I lived in during the 1960s because my lab was too far from the power line input to the house, and the voltage drop on the line to the house was significant. Depending on the time of day, the screen would shrink to about half the size of a normal monitor. I checked the line......; Keywords： Filament transformer regulation circuit
Publish Time：2013-09-04

336 articles Previous 1.. 4 5 6 7 8 9 10 11 12 ..17 Next

Open Source Project Recommendations

Latest Power Management Articles

MorePopular Resource Recommendations

MorePopular Articles

MorePopular Headline Technical Articles

MorePotentially Interesting Components

MorePopular Download Recommendations

Guess you like