emi

Left side = electrode input, that goes into an electro discharge protection ic then into the resistor arrays then into the capacitor arrays then into the ads 1299. Right side = Female input pins that connect to the spi lines of the ads1299 and dvdd power. I will plug in an esp32 dev board with...

Hi everyone, I'm building low power 600w grid following inverter. Scheme is standard with DC-link capacitor at 400v, full bridge H-bridge with 4 power mosfets and LCL filter. LCL filter is designed to filter high switching harmonics. Switching frequency of mosfets is 30kHz and I'm using unipolar...

So I have a switch connected via two wires to a two pin plug which is supposed to go in a two pin socket. One pin of the socket goes to 5V and the other goes to a digital I/O in the Arduino + GND (via 10K). When the switch is pressed and the digital arduino pin goes high, stuff is supposed to...

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...

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...

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...

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...

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...

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...

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...