source:Industry News Popular:adapter release time:2022-04-07 09:59:05 Article author:sznbone
1. Determine your power and input voltage. The switching current of the switching tube, the volume of the transformer, and the input voltage are determined by the power supply power to determine the withstand voltage of the switching tube and the number of input turns of the transformer.
2. Regardless of the voltage and power, the field tube must have a low-pass discharge and fast charge circuit.
3. The transformer must have an absorption circuit to absorb harmonics.
4. The internal resistance of the field tube grid should be pulled down with resistance grounding.
5. It is necessary to select the appropriate switching frequency to ensure that the static power loss is minimized and the field tube conversion efficiency is the highest.
6. When the input voltage exceeds 75V, the resonant circuit should be considered as a negative auxiliary function circuit.
7. When the power is too large, the PFC circuit should be tested and inserted into the design.
8. The drive signal must be stable! And it must be above 5V.
What is the qualification standard for the power adapter?
Generally speaking, the more certified power adapters, the more reliable the quality. The power supplies currently sold in the market must pass the compulsory 3C certification system before they can be sold. The existing 3C certificate has four versions: CCC (S) safety certification, CCC (SE) safety and electromagnetic compatibility certification, CCC (EMC) electromagnetic compatibility certification, CCC (F) fire certification. Among them, CCC(S) only means that the safety standards have been passed.
The CCC (S&E) certification standard that is being used, it puts forward two requirements for safety and electromagnetic compatibility for the power supply. If you see the CCC (S&E) mark on the power supply, it can be understood that it has passed the 3C certification, which is also any power supply The standard that the product must meet does not mean that its quality is excellent. Some minors will use forged signs to deceive consumers without passing the 3C certification.
In addition to the 3C certification, the UL certification mark will also be seen on some advanced power supplies. It is one of the current strict certifications and has relevant restrictions on the structure, materials, test equipment and methods of the power supply. Therefore, the general quality of the power supply with the UL certification mark is guaranteed.
Read recommendations:
ER42 High Frequency Transformer
QC3.0 24W USB Charger,24W USB Charger,24W USB Charger,USB Charger
24W 2USB Charger,24W Charger ,2USB Charger
Popular recommended products
200-500W Switching Power Supply
2020-08-2924-65W Switching Power Supply
2020-08-2912V2ASwitching Power Supply
2020-08-28MKD-571202000 ADAPTER AC ADAPTER CE ADAPTOR UL ADAPTOR Linear Adapter
2020-08-28MKA-571652420 ADAPTER AC ADAPTER CE ADAPTOR UL ADAPTOR Linear Adapter
2020-08-28EI-66 ADAPTER LINEAR ADAPTOR SWITCHING ADAPTOR Linear Power Adapter Linear Adapter
2020-08-28EI-57 ADAPTER LINEAR ADAPTOR Linear Power Adapter Switching Power Adapter INTERCHANGEABLE ADAPTOR Li
2020-08-28EI-48 ADAPTER LINEAR ADAPTOR Switching Power Adapter INTERCHANGEABLE ADAPTOR Linear Adapter
2020-08-28EI-41 ADAPTER AC ADAPTER LINEAR ADAPTOR SWITCHING ADAPTOR Linear Adapter
2020-08-28EI-35 ADAPTER AC ADAPTER SWITCHING ADAPTOR Linear Power Adapter Linear Adapter
2020-08-28ER42 High Frequency Transformer
2020-08-2712-36W POE POWER SUPPLY
2020-08-27Transformer,Power Transformer,Ring Power Transformer
2020-08-27Transformer,High Frequency Transformer,Frequency Transformer
2020-08-2712-24W Medical Switching Power Supply
2020-08-273-12W Medical Switching Power Supply 3W Switching Power Supply 12W Power Supply
2020-08-2745W PD Charger,45W Charger,PD Charger
2020-08-2736-90W Charger,36W Charger,90W Charger,40W Charger,50W Charger
2020-08-2724W USB Charger,24W Charger,USB Charger
2020-08-2724W 2USB Charger,24W Charger ,2USB Charger
2020-08-2710-24W Charger,24W Charger,10W Charger
2020-08-2730-500W LED Power Supply 30-500W Power Supply
2020-08-27Related Information
What are the unique advantages of high frequency switching power adapter
2022-04-20General Mechanism Analysis of Switching Power Adapter.ac power adapter wholesaler
2022-04-19Suppression method of low frequency ripple of switching power supply
2022-04-16Why is the power adapter making noise?
2022-04-15When the power adapter is in normal use, what is the normal temperature?
2022-04-1490% of people use the car charger incorrectly, are you using it right?CAR POWER SUPPLY sales
2022-04-13The difference between a power adapter and a voltage regulator
2022-04-12Select the power adapter to determine these three adaptation conditions.SWITCHING POWER Vendor
2022-04-11Why is the original power adapter better than the non-original one?TRANSFORMER Production
2022-04-09What are the industries where the power adapter can be applied?CAR CHARGER wholesale
2022-04-08What is the difference between high-end and low-end power adapters? How to check after playing,CAR P
2022-04-07How to design a good power adapter,CAR CHARGER wholesaler
2022-04-07Customized desktop power adapter
2022-04-06The quality of the switching power supply determines the safety of electricity use,CAR CHARGER whole
2022-04-02What are the advantages of wireless chargers?
2022-03-30PD charger is a must-have at home
2022-03-29What are the main materials of the power adapter shell?
2022-03-26What is a PD power adapter? It can make charging ubiquitous
2022-03-25Slow charging? Try a fast charger
2022-03-24Do you understand the cause of abnormal noise in the power adapter?
2022-03-23Reasons for abnormal noise of the power adapter
2022-03-22Talking about the common problems of the power adapter
2022-03-19General manufacturer power adapter reliability test items
2022-03-18More energy efficient and safe power adapter
2022-03-17Five ways to solve the power adapter overheating?
2022-03-16What are the common connection faults of cottage shared chargers on the market?
2022-03-15How to use the car charger and matters needing attention!
2022-03-14Do you know the difference between a power adapter and a charger,CAR CHARGER Processor
2022-03-12The power adapter has a very wide range of applications,Audio Transformer
2022-03-11What is the development trend of the power adapter industry,AC ADAPTER
2022-03-10Popular recommended products
MKS-1401700H Switching Power Supply
2020-08-293-100W PCBA power supply 3-100W Customized power supply 3-100W power supply
2020-08-27500W Charger,Charger
2020-08-2836-65W Switching Power Supply
2020-08-29200-500W Switching Power Supply
2020-08-293-15W Switching Power Supply
2020-08-28Transformer,High Frequency Transformer,Frequency Transformer
2020-08-27Transformer,Power Transformer,Ring Power Transformer
2020-08-27EI-66 ADAPTER LINEAR ADAPTOR SWITCHING ADAPTOR Linear Power Adapter Linear Adapter
2020-08-28MKS-1203000EX Switching Power Supply
2020-08-29ER42 High Frequency Transformer
2020-08-2724V21A LED Power Supply 24V Power Supply 21A Power Supply
2020-08-2712VDC8A 96W power supply
2020-08-28EI Power Transformer Power Transformer
2020-08-2724-65W Medical Switching Power Supply
2020-08-2745W PD Charger,45W Charger,PD Charger
2020-08-2772-200W Switching Power Supply
2020-08-29EI-41 ADAPTER AC ADAPTER LINEAR ADAPTOR SWITCHING ADAPTOR Linear Adapter
2020-08-2812W 2USB Charger,2USB Charger,12W Charger,USB Charger
2020-08-2724W 2USB Charger,24W Charger ,2USB Charger
2020-08-2724W USB Charger,24W Charger,USB Charger
2020-08-2724V1.5A 36W Switching Power Supply
2020-08-2910-24W Charger,24W Charger,10W Charger
2020-08-2718-25W Switching Power Supply
2020-08-28EI-57 ADAPTER LINEAR ADAPTOR Linear Power Adapter Switching Power Adapter INTERCHANGEABLE ADAPTOR Li
2020-08-2819V2A 36W Switching Power Supply
2020-08-2812W POWER SUPPLY,12W CAR POWER SUPPLY,POWER SUPPLY,CAR POWER SUPPLY
2020-08-273-12W Medical Switching Power Supply 3W Switching Power Supply 12W Power Supply
2020-08-2712-36W POE POWER SUPPLY
2020-08-2724-36W Charger,36W Charger,24W Charger,30W Charger
2020-08-27