1. There is a corrosive liquid quantitative filling, the filling accuracy is 0.5ml, please design a detection system to achieve the weighing of trace fluids, including the selected sensor and the basi...
频谱分析仪感觉好高级呀,看看外国的小朋友是怎么用Beaglebone弄的吧~Take a Beaglebone, add an LCD cape and a 10 USB TV dongle, install [url=http://sdr.osmocom.org/trac/wiki/rtl-sdr][color=#0066cc]librtlsdr[/color][/url] and my [ur...
[i=s]This post was last edited by jameswangsynnex on 2015-3-3 20:01[/i]Handheld designers of battery-based consumer products have long awaited a programmable logic solution, with maximum design flexib...
What are the master mode and slave mode of this chip? Adjusting the gain resistor will not change the output modulation frequency, right? Source: [url=forum.php?mod=viewthread&tid=459437]Problems with...
The CH554 manual introduces that the chip has a unique ID number:Using the ID number, we can perform encryption, identity recognition and other functions. In order to read this ID number, you need to ...
In recent years, the market for mobile/portable devices such as smartphones and laptops has continued to grow rapidly. While these products continue to integrate more new features to enhance the ...[Details]
1. Introduction
Light control circuit plays a vital role in urban street lamps or corridor lighting. With light control circuit, the lights can be automatically turned on and off according to ...[Details]
Every time I go home and walk up the stairs, I am always scared. The corridor lights are often broken, and no one changes the bulbs, or they are not smart enough and need to be operated manually. E...[Details]
Leakage current is generated by parasitic resistance paths between the measurement circuit and a nearby voltage source. This current can significantly reduce the accuracy of low current measurement...[Details]
The capacity of a battery depends on the amount of charge and discharge, in addition to some factors of the battery itself. Obviously, if the charge and discharge of the battery can be recorded all...[Details]
As a new type of centralized and decentralized elevator control system, serial communication has been widely used in China. Compared with the previous centralized and unified control system, each s...[Details]
Reliability and real-time performance are the basic requirements for control systems. Initially, motor control used analog circuits with discrete components. With the advancement of electronic tech...[Details]
The total coal reserves of Inner Mongolia Autonomous Region in China have been found to exceed 700 billion tons, ranking first in the country. Its short-distance transportation mode is still mainly by...[Details]
This article introduces the advantages of outdoor full-color SMD display and the performance parameters of the dedicated outdoor full-color SMD used, which will help people understand and promote...[Details]
1. Design Overview
This design uses the USB port as the power supply port, uses the DS18B20 temperature
sensor
to collect temperature information, uses the AT89C2051 single-chip mic...[Details]
Theoretically, any MCU can be broken by attackers with enough investment and time using the above methods. Therefore, when using MCU for encryption authentication or system design, the attacker's atta...[Details]
In recent years, the high
brightness
light emitting diode (HB-
LED
) market has developed rapidly.
The LED light efficiency
has been increasing, and the average cost per
...[Details]
GaN LEDs are widely used in mobile phone keypads, backlighting
components
, camera flashes, full-color outdoor
displays
,
etc., but their output
power
has not been high enough to signif...[Details]
1. Set the switch operating frequency: f=60kHz, output current Io=1A; according to the transformer, input and output voltages, calculate the actual maximum duty cycle Dmax=0.457;
2. Calcul...[Details]
1 Introduction
At present, most of the power factor compensators used by many industrial and mining enterprises adopt the method of three-phase simultaneous compensation, which has a bette...[Details]