Why is a large capacitor connected in parallel with a small capacitor?
At high frequencies of the same frequency, the impedance of a large capacitor is smaller than that of a small capacitor, and it h...
[i=s]This post was last edited by w494143467 on 2021-1-31 11:58[/i]1. Introduction
I have studied FreeRTOS for a while, and basically used the official examples. Some time ago, I saw a brother on the ...
When writing MQTT, stm32 subscribes to multiple topics. I don't know how to judge the topic. How to judge? Which topic to judge? I can't debug the program after writing it. Please help....
CV measurementCapacitance-voltage (CV) and AC impedance measurements are commonly performed on many types of devices for a wide variety of applications. For example, CV measurements are used to determ...
Bourns Expands SinglFuse™ SMD Fuse Family with Two New Automotive-Grade Models The new model series features a 150°C temperature rating and is AEC-Q200 compliant*. Ideal for applications requiring ...[Details]
According to Nikkei, John Lord, chairman of the Australian branch of Chinese telecommunications giant Huawei, said in an interview that if Australia's 5G is officially put into commercial use, Huawei...[Details]
Use an 8-core wire, connect one end to the P1 port, and the other end to the field A-DP of the digital tube (A connects to p1.0, B connects to p1.1, ...), and connect the common end X1 of the first di...[Details]
Today, I used STLINK and ULINK to burn, but both failed. The burning mode was SWD! The error message was: flash timeout, reset the target and try it again Error: Flash Download failed - "Cortex-M3" T...[Details]
Active infrared technology in four forms
As security issues gradually become the focus of social attention, the development of security monitoring technology has received more and more attent...[Details]
1. Before the three-phase relay protection tester is ready to enter the test, it is necessary to simulate the instrument relay use and apply the system fault detection of the secondary charge current...[Details]
The arrangement of LEDs and the specifications of LED light sources determine the basic driver requirements. The main function of an LED driver is to limit the current flowing through the LED under...[Details]
Digi-Key Electronics collaborates with TE and Microchip to release new smart city video series: Smarter, Safer Cities Digi-Key Electronics, the global distributor of the most comprehensive and fast...[Details]
1. The TTL Schmitt trigger has an on/off function. A corresponding 32-bit lock register (GPIOx_LCKR) can control the switch to keep the input data register in the current state, achieving a locking e...[Details]
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Program Status Register
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CPSR (Current Program Status Register) i...[Details]
This article introduces a differential
operational amplifier
composed of three cascaded chips
. This operational amplifier can amplify narrow pulse small signals, and the rising edge of the pulse...[Details]
2 Theoretical research on microresistance test
This chapter mainly studies the relevant basic theories of high-precision microresistance tester.
Resistors can be divided into high resistors (...[Details]
Silicon wafers are the carriers of solar cells. The quality of silicon wafers directly determines the conversion efficiency of solar cells. The quality of solar cells needs to be tested and sorted....[Details]
Actual peripheral circuit diagram of 1000W full-bridge soft-switching power supply IC phase-shift control system composed of UC3875, etc.
Figure 1000W full-bridge soft-switching power supply IC ...[Details]
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