I made a motor drive module, the chip used is L9110, when I connected this module to the microcontroller (the program has been written into the microcontroller), it can't drive this motor module. But ...
A constant voltage amplifier is needed in a recent project. I have never used it before. I searched online but couldn't find any useful information. Most of them use discrete components. I don't know ...
I have already declared the statement in the program:
#define unsigned int uint #define unsigned char uchar
Why does the 430IAR compiler still remind that identifier ucharis undefined and identifier u...
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]
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]
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]
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]
0 Introduction
The PTZ controller designed with a single-chip microcomputer as the core can control the camera to move over a large range and at a wide angle in monitoring situations, so that ...[Details]
Compared with other air conditioning systems, ground source heat pump systems have outstanding advantages. Since the temperature deep in the ground remains unchanged all year round, it is much higher ...[Details]
1 Overview
Among all kinds of instruments, transmitters are the most widely used and common. Transmitters are generally divided into pressure transmitters and differential pressure transmitter...[Details]
1 Introduction
With the development of information technology, inverter power supplies are increasingly widely used in the fields of communications, military, aviation, aerospace, ...[Details]
The common straight-slide potentiometer is shown in the figure, model WH20A. The common faults of this potentiometer are mostly caused by the poor contact between the carbon resistance sheet ...[Details]
1 Introduction
With the rapid development of social science and technology, resource shortage is becoming increasingly serious, especially water resources, which are closely related to human s...[Details]
LED driver
power supply
is a voltage converter that converts the power supply into a specific voltage and current to
drive
the LED
to emit light. Usually: the input of the...[Details]
Over the years, the industry has developed a variety of mature technologies for transmitting signals on backplane buses. With the continuous growth of telecommunications and data communications servic...[Details]
Beijing Peking University International Hospital has: 2 nurse workstations in the Critical Care Hospital Center ICU, each of which manages 3 visiting points and 10 bed points; 1 nurse workstation i...[Details]
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