With the promotion and implementation of the "Golden Tax Project", the customer base of tax-controlled cash registers is constantly increasing, and the market capacity of tax-controlled cash registers...
[i=s] This post was last edited by paulhyde on 2014-9-15 04:03 [/i] What do you think should be written in the theoretical analysis and calculation mentioned in the intelligent car paper in question C...
I recently wanted to find a chip that can drive 35W LEDs, but such a driver chip is hard to find, so I used CN5609, and planned to connect 3 in series and 3 in parallel, with a constant current output...
In order to measure the electrolytic power supply, I use a Hall current sensor to measure the DC current output by the electrolytic power supply. The voltage signal or current signal output by the Hal...
[i=s]This post was last edited by ohahaha on 2016-4-19 08:43[/i] [color=#3e3e3e][Repost][/color] [color=#3e3e3e]When engineers draw PCBs, they will inevitably encounter some connectors. In China, thes...
Hey guys, I have an ARM development board MDV-STM32-107. I downloaded two sample programs of ST's DAC, one is a step wave and the other is a sine wave. I used an oscilloscope to look at the waveforms....
In public places such as schools, government agencies, factories and mines, as well as public corridors in residential areas, the phenomenon of long-burning lights is very common, which causes a h...[Details]
We know that microcontroller development tools generally include real-time online emulators and programmers. Among them, online emulators are very good tools, but they are also more expensive...[Details]
Aromatic gases are widely present in food, medicine, cosmetics and various daily chemical products, such as snacks, liquor, spices, Chinese herbal medicines, plasters, perfumes, soaps, shampoos, et...[Details]
A standard cell
is an electrochemical
cell
used as a voltage reference standard in many electrical standards laboratories
. If properly maintained, standard cells are very stable. The ...[Details]
Problems such as the depletion of natural resources, air pollution, traffic congestion, and rising fossil fuel prices have forced societies and individuals to seek alternative means of transportati...[Details]
Motors, especially those with brushes, generate a lot of noise. This noise must be dealt with if the appliance is to meet the requirements of EMC standards. The means to solve EMC are nothing more ...[Details]
Abstract: Aiming at the needs of coal-rock acoustic emission signal monitoring system, a data acquisition circuit with 24-bit resolution and 16-channel synchronous data acquisition function is desi...[Details]
Since the late 1990s, with the demand for higher system efficiency and lower power consumption, the technological update of telecommunications and data communication equipment has promoted the deve...[Details]
Temperature compensated quartz crystal oscillator (TCXO) is widely used as a high-precision frequency source in communication systems, radar navigation systems, precision measurement and control sy...[Details]
LED is the abbreviation of the English word. Its main meanings are: LED = Light Emitting Diode, a solid-state semiconductor device that can convert electrical energy into visible light. It can dire...[Details]
1 Load Regulation
Changes in power supply load will cause changes in power supply output. When the load increases, the output decreases, and vice versa, when the load decreases, the output inc...[Details]
Rated capacity refers to the maximum output power of the UPS (the product of voltage V and current A).
Usually, the UPS power supplies sold on the market are marked with "W" (watt) for smaller...[Details]
Measurement compatibility
It is very important to ensure the compatibility between the pressure sensor and its actual application. Before making a pressure sensor selection, the fo...[Details]
Designing low power circuits while achieving acceptable performance is a difficult task. Doing so in
the RF
bands increases the challenge dramatically. Today, nearly everything has wireless...[Details]
Stepper motors have been widely used in automatic or semi-automatic equipment such as CNC machine tools, medical equipment, and instruments. The usual way to control stepper motors with computers i...[Details]
MCU
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