Helping a Vending machine customer to pass UL certification

Project Description:
The vending machine initially faced challenges in passing UL certification due to electromagnetic compatibility (EMC) issues. Our engineering team intervened by implementing various solutions to address the problem and ensure compliance with industry standards.
First Attempt: Installing VIIP Filter EMI Power Filters
In the first attempt to mitigate the EMC issues, we installed four of our 20A single-phase filters in the vending machine. Despite this intervention, the certification was still not achieved, prompting us to explore additional solutions.
Second Attempt: Adding Ferrite Core Rings
To further improve EMC performance, our engineer onsite added two ferrite core rings (magnetic toroids) to the vending machine. While this adjustment helped reduce margin issues, there was still a small residual offset that needed to be addressed.
Upgraded Filters and Ferrite Rings
Following the feedback from the laboratory testing, our engineering team decided to upgrade the previous single-phase filters and reintroduce the ferrite rings. With these improvements in place, the vending machine underwent EMC tests once again, and this time, it successfully passed the certification requirements.
The Role of VIIP Filter EMI Power Filters:
VIIP Filter's EMI power filters played a crucial role in improving the vending machine's EMC performance. By providing reliable filtering solutions, we helped our customer enhance the machine's electromagnetic compatibility, ensuring compliance with UL certification standards.
Technical Expertise and Onsite Support:
     In addition to supplying EMI power filters, our engineering team offered valuable technical expertise and onsite support throughout the certification process. By closely collaborating with the customer and addressing specific EMC challenges, we were able to identify the root cause of the issue and implement effective solutions.
     The successful outcome of this project highlights VIIP Filter's commitment to quality, innovation, and customer satisfaction. By leveraging our EMI power filters and technical knowledge, we were able to assist our customer in overcoming EMC issues and achieving UL certification for their vending machine. This case study exemplifies our dedication to providing reliable filtering solutions and personalized support to meet our clients' unique requirements.