E8257C

The displayed average noise level (DANL) sensitivity of a spectrum analyzer is -172dBm/Hz, which is only 2dB away from the theoretical thermal noise limit of -174dBm. What kind of black technology do...[Details]

Experiment Name: Application of power amplifier in dynamic characteristics test of voice coil motor direct-driven water hydraulic valve Purpose: A direct-drive valve closed-loo...[Details]

Today, Sogou launched a real-time speech-to-text shorthand tool called "Sogou Dictation", which uses the long-term speech transcription technology of Sogou Zhiyin Engine to provide shorthand requirem...[Details]

In 2019, my country's home appliance exports amounted to US$77.77 billion, up 3.5% from the same period last year, and the export scale has increased for three consecutive years. However, the current...[Details]

The photovoltaic industry has gone from being the most developed and the best investment to being in crisis. The domestic market demand is slow, and a large amount of photovoltaic production capacity ...[Details]

The original intention of developing Thunderbolt was to replace and unify the numerous expansion interfaces with uneven performance on current computers, such as SCSI, SATA, USB, FireWire and PCI E...[Details]

I used ICL8038 to DIY a signal generator before, and the effect was pretty good. The circuit was simple and the output waveform was reliable, but the frequency was not very stable and was greatly aff...[Details]

I came across the term "programming pattern" from the Chinese version of the LabVIEW help document. This relatively academic term is a summary and conclusion of a series of programming structures used...[Details]

According to South Korea's JoongAng Ilbo, on the 21st local time, Rob Strayer, Deputy Assistant Secretary of State for Cyber ​​and Communications Policy at the U.S. State Department, said, "We requir...[Details]

1. Definition of switching power supply: The input AC voltage (AC) can obtain a high-voltage DC voltage (DC=1.4AC) after rectification and filtering. This voltage is connected to the switching eleme...[Details]

Name: Breathing valve air tightness tester, medical protective mask breathing air tightness tester Application: Used to detect the airtightness of the breathing valve of the mask Features The mask ...[Details]

An expert system is a computer program used to model the problem-solving ability of human experts. It is an intelligent program system that contains a large amount of expert-level knowledge an...[Details]

First of all, I am a power supply novice. I have not been working on power supplies for a long time, but I often encounter problems. And some of the problems that occurred during debugging are ridicul...[Details]

This design is based on the single-chip microcomputer AT89C51. Through software programming, its timer is used to generate PWM signals to control the speed of the DC motor. The hardware design mainly...[Details]

If you find that the sound quality of your homemade speakers is still lacking, you can test and adjust them from the following aspects: 1. Check whether the box is leaking If the b...[Details]