Solid State Relay with low EMI interference

alexyz · 21st December 2009, 07:42 AM

Hi,
Sorry, this seems to have nothing to do with AUDIO.
I am assembling a temperature stabilisation unit with a standard PID temperature controller and a solid state relay on the output (DC input control, Out: 220V, 5A maximum, 0.5A most of the time). Which characteristics of the SSR I should look at to find the SSR with minimum of EMI interference? Are there SSR certified to IEC Class B? I know I could use some kind of RC filter, bit I would like to find something ready to install without additional elements, preferably DIN unit with already integrated heatsink. Are there SSR manufactures known to make the low noise SSRs?
Thank you in advance.

peranders · 21st December 2009, 08:36 AM

You should seek for a relay with zero cross detection.

alexyz · 21st December 2009, 11:02 AM

Yes, this was already assumed. Almost all of the SSR for the resistive load use now zero voltage switching.

21st December 2009, 07:42 AM	#1
alexyz diyAudio Member Join Date: Jan 2008	Solid State Relay with low EMI interference Hi, Sorry, this seems to have nothing to do with AUDIO. I am assembling a temperature stabilisation unit with a standard PID temperature controller and a solid state relay on the output (DC input control, Out: 220V, 5A maximum, 0.5A most of the time). Which characteristics of the SSR I should look at to find the SSR with minimum of EMI interference? Are there SSR certified to IEC Class B? I know I could use some kind of RC filter, bit I would like to find something ready to install without additional elements, preferably DIN unit with already integrated heatsink. Are there SSR manufactures known to make the low noise SSRs? Thank you in advance.

21st December 2009, 08:36 AM	#2
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	You should seek for a relay with zero cross detection. __________________ /Per-Anders (my first name) or P-A as my friends call me

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21st December 2009, 11:02 AM	#3
alexyz diyAudio Member Join Date: Jan 2008	Yes, this was already assumed. Almost all of the SSR for the resistive load use now zero voltage switching.

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