COURSES TAUGHT BY PROF. VALDENILTON: Basic Electronics Course Level 1 and 2 Online (100% in VIDEO) https://go.hotmart.com/S90922297H?dp=1 Digital LCD/LED TV Repair Course (100% in PDF) https://technologycursos.wixsite.com/... Transformer Winding Course (100% in PDF) https://hotm.art/Curso-de-enrolamento... COURSES TAUGHT BY OTHER TEACHERS: Basic Electronics Course (with a focus on repair) https://hotm.art/Curso-de-eletronica-... Basic Electronics Course (with a general focus) https://hotm.art/Curso-de-eletronica-... Cell Phone Repair Course (version 5.0) https://hotm.art/Conserto-de-celular-top Cell Phone Repair Course Notebook Motherboard https://hotm.art/Conserto-de-placa-ma... Voltage Inverter Manufacturing and Repair Course https://hotm.art/Aprenda-a-fazer-inve... Photovoltaic Solar Energy Course https://hotm.art/Curso-energia-solar-... Complete Digital Marketing Course (from scratch) https://hotm.art/Curso-de-Marketing-D... The LNK IC is without a doubt today the most requested technology when it comes to voltage production for low and medium intensity switching sources. In this series of six videos you will learn how to analyze switching source circuits with LNK IC configured in Buck topology. The LNK is a self-oscillating IC, responsible for generating and stabilizing voltage to power low and medium loads. Its great advantage is that it does not require external stimulus to start operating, simply being powered by the Drain pin. Another advantage is that it can generate voltage with the help of a chopper transformer (flyback topology) or without the chopper transformer (buck topology). The LNK IC is found in a wide area of ​​Electronics, producing main or auxiliary power supply voltage for various types of electronic equipment, such as: Portable power supplies (cell phone and notebook), standby circuit (digital TV, ATX power supply), white goods (microwave oven, washing machine/dishwasher, refrigerators), etc. As you can see from the usage examples mentioned above, it is essential that you have both theoretical and practical knowledge of the LNK IC to facilitate the search for accurate diagnoses when repairing. In this series of 6 videos you will learn how to theoretically analyze the electrical diagram of a switched power supply with LNK IC in buck topology, as well as how to test the IC both statically (off the board) with an analog multimeter and also dynamically (measuring its terminals with a multimeter to confirm the operating voltages). The videos that contain practical classes with the LNK IC are based on a refrigerator board that has a short circuit, which is why we will use the four-step rule to obtain the diagnosis. We will use the lamp in series to show the defect presented by the board, we will perform a static analysis of the board, we will isolate the stage that is defective and we will remove all the components that are part of the circuit that is causing the board to be inoperative. Finally, we will replace the defective components and connect the board via the lamp in series again to confirm that the defect has been fixed. I hope that by the end of this series of six videos you will be fully able to analyze a circuit of a switched-mode power supply with an LNK IC. VIDEOS TO COMPLEMENT THE STUDY (BE SURE TO WATCH): FIX WITH THE 4-STEP RULE • The four-step rule: Do you know it? HOW TO DETECT DEFECTS WITH THE LAMP IN SERIES • Learn to Interpret (Correctly) ... UNDERSTAND HOW THE FREEWHEELING DIODE PROTECTS THE TRANSISTOR FROM THE DREADED FCEM • Understand How the Freewheeling Diode Pr... HOW DOES THE LINE FILTER COIL ELIMINATES RFI NOISE? • How does the Line Filter Coil of the F... WHY DOES EVERY SWITCHING POWER SUPPLY NEED AN NTC? • Why Does Every Switching Power Supply Need a NTC? ELECTRICAL CHARACTERISTICS OF THE SERIES ASSOCIATION • Electrical Characteristics of the Associat... SHARE THIS VIDEO WITH FRIENDS: • Learn How to Repair Power Supply Boards ... SUBSCRIBE TO OUR CHANNEL BY CLICKING THE LINK BELOW: / @technologycursosoficial Hello, I'm Prof. Valdenilton, Technical Coordinator of the Electronics courses taught by Technology Cursos. I love transforming people's lives through teaching. My goal is to teach people like you to fix the electronic equipment they love, helping in every way possible. INFORMATION: Our Website: https://technologycursos.wix.com/tech... Business Contact: [email protected] Whatsapp Center: (82) 9 8706-9200 COME SAY HI ON MY SOCIAL NETWORKS: Instagram: / technologycursos Facebook: / technologycursos