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2019-9-28PVC suspension polymerization
PVC suspension polymerization The monomer is suspended and dispersed in the aqueous phase in a microdroplet manner, and the selected oil-soluble initiator is dissolved in the monomer, and the polym -
2019-9-28PVC bulk polymerization
PVC bulk polymerization The polymerization device is relatively special, and is mainly composed of a vertical prepolymerization kettle and a horizontal polymerization tank with a frame stirrer. -
2019-10-04Charger must measure
Normal temperature aging test: The charger is energized with a rated load and aged for 6 hours at an ambient temperature of 25 ± 5 °C. The maximum temperature rise of the outer casing after 6 hours of -
2019-10-04Charger test standard
AC input voltage: charger power input 100VAC/240VAC (domestic standard), test DC terminal voltage, voltage should be 5V ± 0.25V -
2019-10-04Charger silk screen and fuel injection standard
Silk screen test standard Solution 1: Wipe the silk screen 15 times (1sec / time) with 700 alcohol on the white cloth strip. The silk screen is not blurred. Option 2: Use 3M #600 adhesive tape t -
2019-10-04USB PD introduction
In the USB PD, a pair of directly connected ports use the CC line in the USB Type-C connector as the communication channel to negotiate the voltage, current, and direction of power supply in the Cable -
2019-10-04USB PD support device
USB PD support device USB PD capable device (a Host, a Device, a Hub, a Charge). These are for informational purposes only and do not limit the possible configurations of products built on this sta -
2019-10-04USB PD operation overview
USB PD operation overview The side that supplies power to the USB PD port is SRC, and the one that receives power is SNK. Between ports, only one of each PD connection is SRC and one is SNK. The SR -
2019-10-05Power IC model
Power IC model The power IC refers to the pulse width control integration of the switching power supply, and the power supply relies on it to adjust the stability of the output voltage and current -
2019-10-05
The role of the IC in the power supply
At present, the most frequently mentioned is the digitization of electronic products, such as a computer motherboard, the most important is the CPU, followed by the logic memory, these are digital dev -
2019-10-05Application development of power IC
The rapid development of electronic technology is characterized by miniaturization, energy saving and environmental protection, powerful functions, and price reduction. It poses new challenges to powe -
2019-10-05
Power IC integrated circuit design and conversion rate
Power ic integrated circuit design At present, the integration of various functions has become the fate of electronic products. For example, mobile phones now integrate communication, PDA, GPS, TV,