Copying the Board, How Should I Copy It?Page Browsing:10546

CatalogI IntroductionII Board Copying TechniquesI IntroductionSpeaking of copying board, you may feel that there is no technical content, and the people who have really copied should have a deep understanding -- this is not that simple.PCB copying board has no software, so it can only be measured and drawn with caliper edge, which it's very slow and its accuracy is also poor. However, It is ve...

Nov 6,2018

How to Judge Whether IC is Working Correctly in Electronic Circuit or NotPage Browsing:9776

CatalogI IntroductionII On-line Judgment2.1 DC Working Voltage Measurement Method2.2 AC Working Voltage Measurement Method I IntroductionHow to judge accurately whether the IC in the circuit is working or not, good or bad, is an important content of repairing TV, audio and video equipment. If the judgment is not accurate, we often have to spend great efforts repl...

Oct 30,2018

24 Classic Circuits Consisting of Bidirectional General Purpose Operational Amplifier LM358Page Browsing:7322

CatalogI OverviewII FeaturesIII ParametersIV FiguresI OverviewThe LM358 includes two independent, high gain, internal frequency compensation double operational amplifiers,  and it's suitable for single power supply with a wide range of voltage, and also suitable for dual power operation mode. Under recommended operating conditions, the power supply current is independent of the power supp...

Oct 29,2018

Ten Principles of DC/DC Conversion Circuit DesignPage Browsing:3180

How to Design DC-to-DC ConvertersPrinciple 1We should understand DC/DC power supply and DC/DC conversion circuit classification.DC/DC power supply circuit is also known as DC/DC conversion circuit. Its main function is to carry out input/output voltage conversion.Generally we call the voltage transformation process of input power supply voltage within 72V DC/DC conversion. Common power supply is m...

Oct 25,2018

Some Effective Methods for PCB Surface TreatmentPage Browsing:2195

CatalogI IntroductionII Hot Air Leveling (Tin Spraying)III Organic Solderability Preservative (OSP)IV All-plate Nickel PlatingV Immersion Gold VI Immersion TinVII Immersion SilverVIII Chemical Nickel PalladiumIX Electroplating Hard GoldI IntroductionWith the continuous improvement of human requirements for living environment, environmental issues involved in the production process of PCB have attr...

Oct 22,2018