bean3
Newbie level 2

Hi everyone,
I am trying to design a PCB with an IEC input , line filter and AC-DC converter and I need a bit of help with line filters.
100 - 240vac to 15vdc. about 2 amps. All mains components are to be PCB mounted.
I want this device to be EMC compliant but we are not a big company with large budgets for EMC testing. We do aim to have this device (a sensor display) tested but we would prefer to avoid repeat testing. We are looking as BS 61326 (Electrical equipment for measurement, control and laboratory use) So lets begin with the power inlet and PSU...
I have found some IEC inlet connectors with single stage filters, pcb mount filters and various AC-DC converters.
I'd like to know if it is better to have an unfiltered IEC then use a multistage filter after it then off to the ACDC converter or can I use an IEC with a single stage filter then another single or multi stage filter inline after it?
Any thoughts or further info required?
Cheers, Ben
I am trying to design a PCB with an IEC input , line filter and AC-DC converter and I need a bit of help with line filters.
100 - 240vac to 15vdc. about 2 amps. All mains components are to be PCB mounted.
I want this device to be EMC compliant but we are not a big company with large budgets for EMC testing. We do aim to have this device (a sensor display) tested but we would prefer to avoid repeat testing. We are looking as BS 61326 (Electrical equipment for measurement, control and laboratory use) So lets begin with the power inlet and PSU...
I have found some IEC inlet connectors with single stage filters, pcb mount filters and various AC-DC converters.
I'd like to know if it is better to have an unfiltered IEC then use a multistage filter after it then off to the ACDC converter or can I use an IEC with a single stage filter then another single or multi stage filter inline after it?
Any thoughts or further info required?
Cheers, Ben