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HDMI Surge Protection

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jchamblee:
Anyone know how effect these things can be? They look pretty hokey to me. Has anyone used or reviewed one? I would love to see a teardown.

Sorry if this has been asked and answered, I did a cursory search and didn't find it mentioned.

https://www.amazon.com/Eazy2hD-Protector-Portable-lighting-Protection/dp/B076WV5K83/ref=asc_df_B076WV5K83/?tag=hyprod-20&linkCode=df0&hvadid=198076677096&hvpos=1o1&hvnetw=g&hvrand=14982123002108209121&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9011548&hvtargid=pla-387091118578&psc=1

https://www.amazon.com/Sewell-Direct-SW-30539-Protector-Lightning/dp/B00YFSPXP0/ref=asc_df_B00YFSPXP0/?tag=hyprod-20&linkCode=df0&hvadid=167140037427&hvpos=1o3&hvnetw=g&hvrand=14982123002108209121&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9011548&hvtargid=pla-307313703576&psc=1

Thanks,
J

Raj:
Just protection from interference. Won't protect from lightening happening on top of your house. Cause my guess is, it's just an inline ferrite and some tvs diodes.

Better to buy a better cable if you are facing some kind of interference problem like occasional disconnections as if cable was loosely connected.

Ice-Tea:
There are dedicated ESD protection ICs for HDMI/DP/whatever. I'm sure it does *something* for a little surge as well. But to stop a 'real' lightning strike you'd probably need something more beefy, thus more capacitance and thus you can kiss signal integrity goodbye.

In conclusion: if it works, it probably doesn't work.  :-DD

T3sl4co1l:
I don't see anything about filtering?  It's probably just an array of ESD diodes and two connectors!

What would you need such a device for?  Dealing with shitty (poorly shielded) cables?

BTW, the specs are probably read directly off the TVS datasheet, meaning it can withstand those stimuli.  That doesn't mean there's any actual effectiveness in protecting equipment.  (Preferably you might use two, one on each end of a long cable, to protect source and load.  You definitely wouldn't put it in the middle as an extension between two cords.)

Tim

jchamblee:
Thanks for all the responses!

I don't need them for filtering at all, I use good cables. The problem is lightning hit the house and destroyed the HDMI outs of all my equipment. The inline protection circuit saved the power supplies. All the devices work great if I choose another output, like Component, or S-Video. I was just looking for something to maybe save the devices if there is a next time. There doesn't seem to be anything from a reputable source, at least not one that I have heard of.

Thanks,
J

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