EMC Case Study: Using Resistors Instead of Ferrite Ring to Reduce Emis s ion of Battery Powered Equipment

Tamás Bodolai, Gábor Hegyi, Angéla Váradiné Szarka
Abstract:
Electromagnetic compatibility levels of the electrical and electronic equipment limited by relevant standards has more and more importance with increasing number of device density. EMC basic concept states that the conformity of a product must be ensured at the design stage. Retrospective solutions are usually much more expensive. Nonetheless, numerous post-modification methods are used in many products. A typical example of these is the separately built-in mains interference filter, ferrite rings placed on wires, clamp on ferrites. This type of modifications incurs significant additional costs in mass production including not only the cost of the additional materials, parts or equipment but also the related services. Although several proven retrospective methods exist for reducing emissions afterwards, these are far not the optimal solutions in terms of the costs. This article describes a costeffective solution for the retrospective EMC level reduction.
Download:
IMEKO-TC4-2022-62.pdf
DOI:
10.21014/tc4-2022.62
Event details
IMEKO TC:
TC4
Event name:
TC4 Symposium 2022
Title:

25th IMEKO TC4 Symposium and 23nd International Workshop on ADC and DAC Modelling and Testing (IWADC)

Place:
Brescia, ITALY
Time:
12 September 2022 - 14 September 2022