How 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 replacing the new integrated circuit and at the same time the fault still exists, so we should make a correct judgment on the...

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 supply voltage. Its scope of use includes sensor amplifier...

Principle one:We 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 mainly divided into vehicle and ...

Solid capacitors are called: solid aluminum electrolytic capacitors. The biggest difference between it and ordinary capacitors (also called liquid aluminum electrolytic capacitors) is that different dielectric materials are used. The liquid aluminum capacitor dielectric material is electrolyte, and the solid capacitor dielectric material is conductive polymer material. Brief Description In vi...

1.PLC is a mature control system composed of Microcontrollers, and is the product of mature and stable Microcontroller application system. It has a strong universality.2. Microcontrollers can constitute a variety of application systems, and have a wider range of use. As for Microcontrollers, it is only an integrated circuit and can only be applied with other components and software.3. From th...