[b] When mapping a product circuit: It can be determined that it is an optocoupler, with a total of 8 pins, 1 and 3 pins are empty, 2 and 3 pins are LED terminals, 8 and 5 pins are connected to power ...
Location: Shanghai Company type: Entrepreneurial software company Time: Valid until the end of February Requirements: 1. Know how to write programs with Windows SDK 2. Know any direction of drivers, n...
Hello, all experts.I recently had an idea.I don’t want to buy it ready-made. I want to try DIY single chip 51.I hope it can be used to record 1~2 songswith a music IC.Please feel free to give me some ...
I want to use FPGA to do a digital down-conversion recently. I don't know if the multiplier in FPGA can input a frequency generated by NCO into the multiplier, multiply it with the signal sampled by A...
My purpose is, for example, to power the +5V and -5V of an op amp, can the ground of one be connected to the 5V of the other? If not, please provide a solution. Thank you!...
I just bought a mini2440 development board from FriendlyArm. According to their user manual, after setting up the "HyperTerminal", I turned on the power and booted from NOR FLASH. Every time I enter a...
Today, with the increasing integration of functions, mobile phones can also be used as portable media players (PMP), digital cameras, handheld computers (PDAs), and even global positioning systems ...[Details]
introduction
Throughout the history of automotive lighting, power has always played an important role. Initially, cars only needed headlights to see the road in the dark. Later, other light so...[Details]
introduction
For the voltage regulator modules (VRMs) that power the latest computer central processing units (CPUs), power supply designers have historically used multiphase interleaved b...[Details]
Introduction
Power subsystems are becoming more and more integrated into the overall system. Power systems have moved from being separate "essential dangerous devices" to being monitorable...[Details]
AD8205 is
a single-supply high-performance differential
amplifier
launched by
Analog
Devices of the United States
. The typical single-supply voltage is 5V, and its common-mode volta...[Details]
I've been studying dot matrix recently. It looks simple, but it takes a while to master it completely! The 8*8 dot matrix hardware circuit I'm making now is like this. The row is driven by 74HC138 + t...[Details]
1. Disadvantages of choosing too high a voltage level
Choosing too high a voltage level will result in too high an investment and a long payback period. As the voltage level increases, the...[Details]
According to the Industrial Technology Research Institute of Taiwan, due to factors such as the oil crisis and global warming, the issues of energy conservation and environmental protection have at...[Details]
A few days ago, I bought an 8LED flashlight in the market (the flashlight uses No. 5 batteries). Because I had other things to do, I didn't pay attention when purchasing it. When I got home and use...[Details]
Don’t just look at the power when choosing a power supply
We know that a power supply with a low rated power can hardly meet the power supply needs of the system, which may cause frequent free...[Details]
In the 1980s, breakthroughs were made in the design and production of small, low-power quartz metal halide lamps with precise dimensions. At the same time, with the acceleration of people's lives a...[Details]
The battery and its management system are one of the key technologies of electric vehicles. In the past few years, most companies have encountered embarrassment in the development of electric vehic...[Details]
The cruise control system (CCS) of a vehicle is also called a constant speed driving system. It is an electronic control device that uses advanced electronic technology to automatically adjust the ...[Details]
If users want to extend the effective use time of the battery, in addition to ensuring the quality of the charger, correct charging techniques are also essential. Here are 14 tips for charging mobile ...[Details]
This paper first proposed an elevator controller algorithm based on a finite state machine, and then designed a three-story elevator controller based on the algorithm. The correctness of the elevat...[Details]