CPU：RK3399
System: Android 7.1.2In order to reduce costs, the motherboard changed the Type-C to MicroUSB interface, saving the fusb302 chip
Refer to Rockchip 's official document Part 4 : Micro USB2.0...
Recently, a frequency converter 11kw was installed on a mud mixer! The power frequency current is 14.7A, the voltage is 390V. The frequency conversion 50HZ input current is 6A, the voltage is 390V. Th...
[i=s] This post was last edited by dontium on 2015-1-23 13:36 [/i] #ifndef _AD_func#define _AD_funcvoid main();void SystemInit(void);void AdInit(void);#endifA header file but I don't know what it mean...
[align=left] Timer interrupts are basically used in every program. The purpose of this test is to configure a timer interrupt and then control the LED to flash. There are a total of 4 timers inside th...
[i=s]This post was last edited by jameswangsynnex on 2015-3-3 20:05[/i] Base station antenna monitoring network consists of: through field measurement or telemetry, the direction, tilt angle, air pres...
Emergency hand-held lamps powered by 6V maintenance-free batteries are widely used in rural areas. The charger used is a transformer step-down and single diode half-wave rectifier, and the charging...[Details]
Analog engineers have traditionally struggled with complexity when designing power supplies that required multiple outputs, dynamic load sharing, hot-swap, or extensive fault-handling capabilities....[Details]
In this article, the high-performance DSP developed by TI can be used as an effective confidentiality method if it is applied to PC encryption cards.
As an effective network security solution,...[Details]
The reason for the light decay of white LEDs: the decline of phosphor performance
So far, the rapid decline of the luminous performance of white light LEDs, especially low-power white light LE...[Details]
Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]
Contact resistance
is the resistance to current flow through a closed pair of contacts. This type of measurement is performed on devices such as connectors,
relays
, and switches. The...[Details]
1. System Structure
This system is a simulation system of indoor air-conditioning temperature/humidity control system. The data acquisition and control center collects temperature/humidity...[Details]
Since the No. 4 blast furnace of Handan Iron and Steel was put into operation in 1993, its external equipment has been seriously aged, and the original PLC control system TDC3000 of the hot blast furn...[Details]
1. Introduction to CIF Board
Fieldbus integration based on PC system
Whether it is a master or a slave, fieldbus has won unanimous praise in the field of PC-based automation. For more...[Details]
1 Introduction to HART Protocol
HART (Highway Addressable Remote Transducer), an open communication protocol for addressable remote sensor high-speed channels, was launched by Rosemen in the U...[Details]
General LED lighting has a current limiting resistor in the driving circuit, and the power consumed by the resistor has nothing to do with the LED light emission. In order to improve efficiency, a...[Details]
Continuity test
A variety of devices need to be checked for continuity, including cable assemblies, printed circuit boards, and connectors to ensure that these components have the expected contin...[Details]
Abstract: With the development and construction of BeiDou II system, China will shift from the situation dominated by GPS to the situation dominated by BeiDou II global navigation system independen...[Details]
System Overview
The system consists of a signal preprocessing circuit, a single-chip computer AT89C2051, a systematic LED display module, a serial port data storage circuit and system software...[Details]
Analog electronics
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