AEM UEGO rings at 14-16khz and it is driving me nuts.
#22
SadFab CEO
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True, as long as you get the crossover frequency below 5k. Which I would want to calculate out to be sure, because troubleshooting yada yada
not like you need help here, but here-
RC Low-pass Filter Design Tool
not like you need help here, but here-
RC Low-pass Filter Design Tool
#23
True, as long as you get the crossover frequency below 5k. Which I would want to calculate out to be sure, because troubleshooting yada yada
not like you need help here, but here-
RC Low-pass Filter Design Tool
not like you need help here, but here-
RC Low-pass Filter Design Tool
That's a handy tool, gonna book mark that one.
Using the DCR of the inductor I have (since that one only does RC filters, and an inductor will only improve the situation) of 0.8ohms and a 0.022F cap, it is -40db by 1khz. Only problem is, this seems to limit the current on the ground of the meter to 0.3-0.4 amps rather than the 1amp it was doing before. I think I will just go with the cap for now.
I have a video showing the current draw and effectiveness of the capacitor, but my internet is slow and it will take about an hour for it to be up...
#24
SadFab CEO
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So impedance will be whatever voltage is in ohms. Call it 13.5 ohms.
I just linked the RC, scroll down on the left of the page for the other links, it does ALLOFTHETHINGS
RCL LPF
Bookmark the main page
http://sim.okawa-denshi.jp/en/
I just linked the RC, scroll down on the left of the page for the other links, it does ALLOFTHETHINGS
RCL LPF
Bookmark the main page
http://sim.okawa-denshi.jp/en/
#26
I put the cap in, wired everything up and ran the new B+ for the radio. It all works, noise floor is now acceptable through the stereo system and the head unit no longer rings internally. Just used the 2200uf cap. It's 35v at 85C, should be ok in the dash board. I will design/make a nicer filter sometime down the road.
That is a handy site! My brain was apparently elsewhere before.
I do try to wear earplugs when I can at least. Hoping for it not to be like that, though it seems I am limited to 18khz now. Use to be I could detect (didn't quite sound like a tone) up to 22khz.
So impedance will be whatever voltage is in ohms. Call it 13.5 ohms.
I just linked the RC, scroll down on the left of the page for the other links, it does ALLOFTHETHINGS
RCL LPF
Bookmark the main page
Engineering Design Utilities
I just linked the RC, scroll down on the left of the page for the other links, it does ALLOFTHETHINGS
RCL LPF
Bookmark the main page
Engineering Design Utilities
I do try to wear earplugs when I can at least. Hoping for it not to be like that, though it seems I am limited to 18khz now. Use to be I could detect (didn't quite sound like a tone) up to 22khz.
#27
Retired Mech Design Engr
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Join Date: Jan 2013
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In all seriousness, my son makes his living primarily as an audio engineer. He really protects his hearing, and has kept his high frequency. I lost the ability to hear 18k flybacks about 10 years ago.
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