EEVblog Electronics Community Forum

Electronics => RF, Microwave, Ham Radio => Topic started by: CopperCone on September 23, 2017, 12:10:17 am

Title: why do some bandpass filters have permament magnets in them?
Post by: CopperCone on September 23, 2017, 12:10:17 am

I don;t see this in my other bandpass filters.

3-4 ghz bagnet btw. larger lize, like a red bullcan

Title: Re: why do some bandpass filters have permament magnets in them?
Post by: tec5c on September 23, 2017, 07:01:32 am

Jeez mate, you sure do like to flood this forum. "Not that there's anything wrong with it". :scared:

BTW, ever hear of Google?  :-DD

Title: Re: why do some bandpass filters have permament magnets in them?
Post by: CopperCone on September 23, 2017, 07:29:28 am

i mean do you have a problem with flooding this forum with relevant questions? I never understood that. You simply bypass a few strings your not interested in. If your hatred is that great then I will just make a bunch of alt account on darknet hosting services and do the same exact thing. perhaps it will ease your fragile psychie. Perhaps you feel competitiion towards getting some sweet RF job. I don't really give a shit, I want to design my own system.


perhaps bump your threads if you feel threatened. I felt completely sad when I read your response, It ha nothing to do with any of my other threads.

Again, if you want to play signals intelligence with me then I am happily obliged. I have made years worth of progress in moths using this forum.

to be honest this is the same type of behavior I experienced with thermodynamics engineering in the company I used to work at. Ask a question, get thrown a book at you (god forbit he learns my curve tracing job)

Or, the rat race of college never left you. Everything is a threat. Usually means your job is easy but the bosses are scared cuz the name sound odd.

I'd rather wait on google and make a transfer function rather then looking at some cackling dumbass

Title: Re: why do some bandpass filters have permament magnets in them?
Post by: T3sl4co1l on September 23, 2017, 08:42:15 am

I didn't read it as a threat...

Just the observation that you do indeed start an awful lot of threads here.

BTW, "RF isolator" may be a helpful keyword.

Tim

Title: Re: why do some bandpass filters have permament magnets in them?
Post by: bjcuizon on September 23, 2017, 09:14:24 am

Are you sure they're magnets? They might be small ferrites to prevent other unintentional radiations.

Title: Re: why do some bandpass filters have permament magnets in them?
Post by: CopperCone on September 23, 2017, 11:18:29 am

they might be ferrite only. I will run an experiment today.

did not think you can combine an isolator and a BPF in one can.

Title: Re: why do some bandpass filters have permament magnets in them?
Post by: tec5c on September 23, 2017, 12:36:57 pm

Alright then...  :horse:

Title: Re: why do some bandpass filters have permament magnets in them?
Post by: CopperCone on September 23, 2017, 01:03:04 pm

in my country w put those animals in nice zoos

Title: Re: why do some bandpass filters have permament magnets in them?
Post by: T3sl4co1l on September 23, 2017, 07:11:04 pm

https://www.etsy.com/listing/61844334/4-tiny-assorted-ferret-beads-cb696?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=ferret%20bead&ref=sr_gallery_2 (https://www.etsy.com/listing/61844334/4-tiny-assorted-ferret-beads-cb696?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=ferret%20bead&ref=sr_gallery_2)

Title: Re: why do some bandpass filters have permament magnets in them?
Post by: bjcuizon on September 23, 2017, 11:05:01 pm

Quote from: T3sl4co1l on September 23, 2017, 07:11:04 pm

https://www.etsy.com/listing/61844334/4-tiny-assorted-ferret-beads-cb696?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=ferret%20bead&ref=sr_gallery_2 (https://www.etsy.com/listing/61844334/4-tiny-assorted-ferret-beads-cb696?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=ferret%20bead&ref=sr_gallery_2)

:-DD Hmmm...we're talking ferrite here.  ;) :D

Title: Re: why do some bandpass filters have permament magnets in them?
Post by: CopperCone on September 30, 2017, 02:27:10 pm

caution magnets keep 4 inches from steel iron or  magnets

tesla business not doing good?