emi

  1. A

    EMI FILTERS

    Hi, We have an power supply card, In that input side we have Adapter, Type C and Lion battery Output side we generate three outputs 5V/2A, 5V/3A X 2. My question is for protecting against internal and external EMI where we need to add filter input side or output side? How to decide that...
  2. all_about_the_dip

    EMC improvements

    Greetings, I've been in a design for a while for my university. It's a security system based on sound(a glass break detector) but the point of the question is not the functionality of the circuit but the EMC issue. I've tried to reduce the EMI but I would like to ask to any expert any kind of...
  3. Younes Thabet

    What're design rules to consider in order to have the best chance of complying with EMC requirement?

    Hello guys, I am designing a 2 layer PCB that contains a power part (PSU, Relays) and digital one (MCU, digital & analog I/Os, ..)... I looked up some design rules that should minimize EMI but i am not sure if those rules I applied are sufficient for my board to be EMC compliant!! here are the...
  4. A

    Three-phase EMI filter. LTspice

    Hello. Could you help me understand how to create a three-phase EMI filter? For example, I chose a full-bridge inverter with parameters P = 100kW, f_switch = 100 kHz. The noise measurement is performed using the LISN. The results of the simulation (calculation time 0-50ms) In this graph...
  5. eduncan911

    Help with EMI Ferrite (magnet?) Rings

    Could someone point me to where I can research, measure, calculate, and/or size these ferrite rings if voltage and rough max amps are known? It's for 5, 12 and 24VDC low power system pulling up to 2 to 3 AMPs per run. Some amps are far lower. Also would like advice about bundling several...
  6. Sajid_Naseeb

    How do I simulate these two different Line Impedance Stabilization Network (LISN) models in LTspice?

    So, I found these models for Line Impedance Stabilization Network (LISN) in two different books. I want to simulate these two models in LTspice, but I don't know which side to connect the EUT and which side to connect the spectrum analyzer and ofcourse, where to connect the source? and how do I...
  7. R

    Electromagnetic interferences - how to handle?

    Hi everyone, I'm working on a little DIY lamp project with a capacitive switch. The kit consists of a breadboard with some components, a battery and its charging PCB, and a 20cm-long electric wire that leads to the aluminium foil used as capacitive sensor. The lamp switch on and off randomly...
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