#include stdio.h
#define FRAME180
short int h[19] = {399,-296,-945,-1555,-1503,-285,2112,5061,7503,8450,7503,5061,2112,-285,-1503,-1555,-945,-296,399
};
static short int nBuff[FRAME + 20];
void Lowpas...
1. IntroductionDuring the debugging process of the device, you often need to check some data and operating status of the device. Use the STM32H745 development board to display the main data and status...
There are many high-frequency ultrasonic sensors for sale on the Internet, but they do not have the relevant sensor processing circuits.
How can we design this kind of circuit? The sensor doesn’t seem...
Introducing a national invention patent - a smart water meter with one card. The patent was applied by Zhengzhou Leyuan Electronic Technology Co., Ltd. and was authorized on January 9, 2018.Contents
T...
There are generally two reasons for oscilloscope waveform jitter. One is that the signal is not synchronized, which is a problem with the oscilloscope trigger setting. The other is that the signal its...
Signal integrity is the main criterion for measuring signal quality with an oscilloscope, especially when we need to observe small signals or slight changes in large signals, signal integrity becomes ...
In recent years, with
the rapid development of
LED
production technology,
the brightness
of LEDs
has been improved and their lifespan has been extended. In addition, the production co...[Details]
1. Commonly used topologies of switching power supplies (5 types are commonly used):
1. Commonly used topologies of switching power supplies (5 types are commonly used):
1. Forward circuit (commo...[Details]
At present, single-chip white light LEDs with a power of 1W or 3W are very common, especially in some mid-to-high-end portable high-intensity flashlights. These flashlights are generally powered by...[Details]
L includes the inductance of the lead cable and the inductance of the capacitive sensor itself:
r is composed of the lead resistance, the plate resistance and the metal bracket resistance;
...[Details]
SUNNYVALE, Calif., Sept. 23, 2020 (GLOBE NEWSWIRE) -- DigiLens Inc., a global innovator in holographic waveguide display technology for extended reality (XR), today announced its CrystalClear™ augmen...[Details]
As people's living standards continue to improve, people's attention to their own health has also risen to an unprecedented level. Today, more and more high-tech means are beginning to b...[Details]
Analog Devices, Inc. (NASDAQ: ADI) announced that its wireless battery management system (wBMS) has passed the highest standards of automotive cybersecurity engineering and management certification. ...[Details]
In security monitoring, cameras are undoubtedly an important component, and various camera technologies are also very critical and one of the main items of competition among various companies. Cam...[Details]
Compared with the current domestic general traffic light control system, the traffic light control system introduced in this article has certain advantages, which are specifically reflected in the fo...[Details]
GoldVIP accelerates S32G chip evaluation, software development and rapid prototyping for service-oriented gateways, domain controllers and vehicle computers
Shanghai, China - Februar...[Details]
Temperature control using an analog proportional-integral-derivative (PID) controller is a very simple circuit that is an effective way to ensure that the set point of a thermoelectric cooler (TEC)...[Details]
The low noise amplifier (LNA) is an important part of the RF transceiver. It can effectively improve the receiver's receiving sensitivity and thus increase the transmission distance of the transcei...[Details]
Background of the Science and Technology Innovation Board November 5, 2018 At the opening ceremony of the first China International Import Expo, President Xi Jinping announced that a Science a...[Details]
An effective harmonic suppression solution
A Kind of Effective Plan to Restrain Harmonic
In the power grid, there are a large number of nonlinear loads, which cause the grid curr...[Details]
Microcontroller MCU
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