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Switching power supply is a type of power supply that controls the turning on and off of a power supply and maintains a stable output voltage. Switching power supply is generally composed of pulse width modulation (PWM) control ICs and MOSFETs. With the development and innovation of power electronics technology, switching power supply technology is also constantly innovating. At present, switching power supply is widely used in almost all electronic devices due to its small size, lightweight, and high efficiency, and is an indispensable power supply method for the rapid development of the electronic information industry today. Switching power supply products are widely used in industrial automation control, scientific research equipment, LED lighting, industrial control equipment, communication equipment, power equipment, instruments and meters, medical equipment, semiconductor refrigeration and heating, air purifiers, electronic refrigerators, LCD displays, LED lamps, communication equipment, audio-visual products, security monitoring, LED light bags, computer cases, digital products and instruments, and other fields The name of the product subcategory is based on the corresponding international standard number according to the standard number. Implementation rule number 0201 Household and similar purpose plugs and sockets GB1002-2008 CNCA-01C-003 2001 "Implementation Rules for Compulsory Certification of Electrical and Electronic Products" (Circuit Switches and Protective or Connecting Electrical Appliances - Household and Similar Purpose Plugs and Sockets) GB1003-2008; GB2099.1-2008IEC 60884-1:1994GB2099.2-1997IEC 60884-2-2:19890202 Switches for household and similar fixed electrical appliances GB16915.1-2003IEC 60669-1:2000E3.1CNCA-01C-004 2001 Implementation Rules for Compulsory Certification of Electrical and Electronic Products (Circuit Switches and Protective or Connecting Electrical Appliances Switches for Household and Similar Fixed Electrical Appliances) 0203 Industrial Plugs, Sockets and Couplers GB/T11918-2001 IEC 60309-1:1999CNCA-01C-005 2001 "Implementation Rules for Compulsory Certification of Electrical and Electronic Products" (Electrical Equipment for Circuit Switches, Protection or Connection) GB/T111919-2001 IEC 60309-2:19990204 Household and Similar Appliance Couplers GB17465.1-1998 IEC60320-1:1994+A1:1995+A2:1996CNCA-01C-006 2001 Implementation Rules for Compulsory Certification of Electrical and Electronic Products (Circuit Switches, Protective or Connecting Electrical Appliances, Household and Similar Appliance Couplers) GB17465.2-1998 IEC60320-2-2:1990+A1:1994+A2:19970205 Thermal Fused Links GB9816-2008; CNCA-01C-007 2001 "Implementation Rules for Compulsory Certification of Electrical and Electronic Products" (Thermal Fused Links for Circuit Switches and Protective or Connecting Electrical Appliances) 0206 Housing for Fixed Electrical Appliances and Accessories for Household and Similar Purposes GB17466.1-2008; CNCA-01C-008 2001 "Implementation Rules for Compulsory Certification of Electrical and Electronic Products" (Circuit Switches, Protection or Connection Electrical Appliances, Household and Similar Fixed Electrical Appliances, Electrical Accessory Enclosures) GB17466.21-2008GB17466.23-2008GB17466.24-20080207 Tubular Fuses for Small Fuses GB9364.1-1997IEC 60127-1:1988CNCA-01C-009 2001 "Implementation Rules for Compulsory Certification of Electrical and Electronic Products" (Tubular fuse links for small fuses in circuit switches and protective or connecting electrical devices)Function of testing report:1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report 2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problems100% inspection and testing process:1. Telephone communication and confirmation of requirements 2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:1. The testing industry is fully covered, meeting different testing needs 2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate 4. Free initial testing, with no testing fees charged 5. Self service order delivery for free on-site sampling 6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China
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