-
Apple launched three iPhone 11 phones this year. The price of the lowest-end iPhone 11 was reduced by 1,000 yuan to 5,499 yuan, while the prices of iPhone 11 Pro and iPhone 11 Pro Max remained at 8,6...[Details]
-
The appearance of the ACS712 current detection and alarm module system: ACS712 circuit schematic: The ACS712 microcontroller source program is as follows: Function: detect current, digital tube...[Details]
-
Balances are teaching instruments and are widely used in teaching laboratories. There are many types of balances, among which physical balances are a common type. When we use a physical bala...[Details]
-
When LED lighting began to enter our lives, new LED bulbs also began to mature, that is, rechargeable LED bulbs. Due to its many advantages such as energy saving and environmental protection, strong a...[Details]
-
The voltage of automobile power supply has been changed from 6V in the 1950s to 12V, which has a history of more than 50 years. Since 1990, the power consumption of automobiles has increased by 5% ...[Details]
-
As we all know, there are not many major smartphone processor manufacturers in the world, mainly because the R&D threshold is too high, resulting in very few players being able to enter the industry....[Details]
-
With the launch of HarmonyOS 2, Huawei is currently running EMUI and HarmonyOS in parallel on mobile phones. Considering that the HarmonyOS 2.0 upgrade covers models as early as Kirin 960, it ...[Details]
-
GPIO — General purpose input/output General Purpose Input/Output (GPIO) is organized as a port of up to 32 I/Os (package dependent), allowing up to 32 pins to be accessed and controlled through a sin...[Details]
-
Choosing the right light-emitting diode (LED) driver solution for low-voltage portable device backlight or flash applications is a challenge for designers, as they must consider extending battery lif...[Details]
-
1. EMI sources of switching power supplies
EMI interference sources are mainly reflected in power switch tubes, rectifier diodes, high-frequency transformers, etc. The interference of the exte...[Details]
-
Continue to learn the basic knowledge of uboot transplantation 1. First learn the basic operation instructions of nandfalsh nand info (displays available nand flash) nand device (display or se...[Details]
-
Note: The mouse driver described in this article can only realize the button-like functions of the left and right mouse buttons and the scroll wheel. Pressing the left button will type "l", the rig...[Details]
-
There is a control system, the controller is CPU 1511C-IPN, the pressure sensor measures the oil pressure, the oil pressure range is 0 ~ 10MPa, when the oil pressure is higher than 8MPa, an alarm ...[Details]
-
According to foreign media reports, Hyundai Motor has set up two ultra-high-speed electric vehicle charging devices "Hi-Charger" in the Goyang motor studio. This device has a DC fast charging capacit...[Details]
-
Power supply 0-1 hour timed
AC Power supply
Circuit
The AC power supply 555 with a power supply of 0~1 hour constitutes a timer within 1 hour. J is the coil impedance 212Ω IRC MR31...[Details]