High-fidelity reception of ultra-long-range FM radio

The reception of FM broadcasts has been a hot topic in recent years, especially last year. This is because FM broadcasts have better sound quality, higher fidelity, stronger anti-interference, and richer programs than AM broadcasts. The most critical It is low cost, although di

A "desktop theater" based on a personal computer

At present, the popularity of home computers has swept across the country, especially the rich, novel and unique functions of multimedia computers have attracted a large number of fans. Newspapers and books have also developed and published many computer-related columns and ar

Failure Analysis of Cable TV TDWT Series Amplifier

Due to the reliable performance and reasonable price of the TDWT series amplifiers, they are widely used in the current cable TV network transmission. After several years of operation, the author summarizes the following two treatment methods for the TDWT series amplifiers, and

EL34 tube machine principle, production and debugging

1. Circuit Design The EL34 amplifier circuit is shown in Figure 1. The first stage voltage amplification adopts SRPP single-ended push-pull circuit, the second stage adopts long tail inverting and pushing circuit, and the last stage adopts super-linear connection push-pull ou

Application skills of motor design

Layout Constraints Today's adjustable speed drive circuits all use frequency converters to adjust the output current to meet the requirements of three-phase motors. The shape and size of the inverter are usually limited by the application. In many cases, the circuit board

Introduction to the DS8500 HAR

Abstract: This applicaTIon note describes how to use of DS8500 HART modem for a process-control applicaTIon. The arTIcle explains how to interface the DS8500 to a microcontroller and 4–20mA current loop to ensure proper HART communicaTIon. IntroductionThis application n

How to improve the energy efficiency of motor design

This article discusses the products and industry trends of motor drive circuits and provides solutions that help designers reduce energy consumption, increase reliability, reduce component count, and achieve environmental protection. The energy efficiency of motor design has al