The core of electronic devices is circuit boards, which are welded and assembled from various types of electronic components. If the equipment malfunctions or experiences a short circuit, most of the reasons will be caused by the failure or damage of electronic components. Next, Baijian will introduce the testing techniques for circuit board components for your reference
Testing Techniques for Circuit Board Components
1. Measure the Polarity of Each Pin of the Rectifier Bridge
Set the Multimeter R
× At 1k gear, connect the black lead to any pin of the bridge stack, and measure the remaining three pins with the red lead. If the readings are all infinite, the black lead is connected to the output positive pole of the bridge stack. If the reading is 4-10k Ω, the black lead is connected to the output negative pole of the bridge stack, and the other two pins are AC input terminals of the bridge stack2. Determine the quality of the crystal oscillator
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 problemsBaijian 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