Qianzhi Electronics (Shenzhen) Co., Ltd. (a subsidiary of Qianzhi Group) was founded in 1986 by Chairman Chen Chuzhi, and has 30 years of outstanding experience in resistor production. We introduce the best production technology and raw materials from Taiwan, China, and provide the most cost-effective electronic components for B2B manufacturers around the world. The main products include home appliances, monitors, uninterruptible power supply systems, LED lights, power supplies, communication equipment and automobiles. The main markets are in China, Southeast Asia, America, Europe and other places.
[color=black]For an electronic system nowadays, the design of the power supply is becoming more and more important. I would like to discuss with you some of my own experience in power supply design, s...
[i=s]This post was last edited by Blue Angel on 2021-8-18 14:08[/i]Thanks to the forum for providing me with an opportunity to disassemble the fast charger. This time I received the Xiaomi 65W fast ch...
[size=4][color=#000]1. Why are some submodules or module parameters grayed out and cannot be modified? For example, the parameter 'treat as atomic submodule' of the submodule 'Speed and direction are ...
The voltage across the two terminals of 4735 is 5.2v. The voltage drop of D4 and D5 is 0.7V. The current flowing through the LED is 5~20ma. Here we take 15ma. Now we need to determine whether R11 is 5...
With the rapid development of urban economy, elevators are increasingly used as a vertical transportation tool. However, elevator fault detection and maintenance, especially the role of elevator remot...[Details]
LED is the abbreviation of light emitting diode, which is an electric light source made of semiconductor technology. The core part of LED is a chip composed of P-type semiconductor and N-type semi...[Details]
LED lamps and bulbs are now rapidly replacing incandescent, halogen and CFL (compact fluorescent lamp) light sources in many general lighting applications. Flyback DC/DC converters are the power su...[Details]
With the rapid development of intelligent control technology, computers and information technology, the trend of information appliances IA (Information Application), computers and communications integ...[Details]
It is well known to automotive suppliers that automakers are demanding more from their supply base. For connector suppliers, this means stricter requirements for product performance, stability and ...[Details]
The era of mobile access to the Internet has arrived, and it will rapidly change the business and infrastructure needs of mobile operators under a whole new trend of requirements. We need 4G LTE to...[Details]
At present, how various communication technologies will evolve after 3G is a focus of great concern in the industry. Especially for TD-SCDMA, whether it can achieve smooth evolution to the next gen...[Details]
1 Introduction
Ultrasound refers to elastic vibration with a frequency higher than the audible frequency limit (i.e., in the frequency band above 20 kHz). The propagation process of this vib...[Details]
In order to prevent the lithium battery from being damaged by abnormal conditions such as overcharge, over discharge, and overcurrent, a lithium battery protection device is usually used to prevent...[Details]
The power consumption of a switching power supply includes fixed losses caused by parasitic resistances such as semiconductor switches, magnetic components, and wiring, as well as switching losses ...[Details]
0 Introduction
This paper designs a dot matrix LED text display screen that is easy to update, expandable, and low-cost. The ways to reduce costs are: ① Use the Bluetooth data transmission...[Details]
1 Introduction
In the process of crude oil pipeline transportation in the oil industry, crude oil needs to be handed over between enterprises, so flow meters are widely used. The measurement ac...[Details]
0 Introduction
In the fields of petroleum, chemical industry, metallurgy, electricity, textile, light industry, water conservancy and other industries and scientific research, relevant pressur...[Details]
In the design of multi-channel passive radar signal processor, the author used DSP chip
TMS320VC5409
to control the interface circuit of four DDC chips HSP50214B, and studied the ke...[Details]
Tags: digitization, analog technology, digital technology
1. Introduction
The ability of digital electronics to quickly and accurately collect image, voice and audio data from our...[Details]
Power technology
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