Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
can you please elaborate on the function of that LC filter.
the signal input of the op-amp came from a sweep generator similar to this one.
i just wonder about the frequency sent by this anf the frequency filtered out by the LC filter.
Not without a lot of examination and calculations - and presumably this is related to your already deleted thread - so isn't suitable for discussion here!.
Selling such devices isn't illegal in most countries, but USING them is, there's no acceptable reason to have such a device, and they are quite rightly illegal.
Is this a 'Guess the Illegal mystery device' thread? I think I got a good idea, but will keep it to myself this time. That topic is to well used, and we just went through all that...
L is the inductor, C is the capacitor. Filters are used to remove unwanted components of a signal. Didn't really study the circuit to guess which type, mostly tried to figure out why its illegal to use it.
Very simply an LC filter lets certain frequencies pass and attenuates others. I believe that this is a bandpass filter, meaning that it attenuates frequencies higher and lower than the passing frequency. I'm not sure though.
A lowpass filter attenuates high frequencies and passes lower ones.
A highpass filter attenuates low frequencies and passes higher ones.
L is the inductor, C is the capacitor. Filters are used to remove unwanted components of a signal. Didn't really study the circuit to guess which type, mostly tried to figure out why its illegal to use it.
thanks a lot, it could be really a bandpass filter..... based on its application..
nigel, thanks for the info.... i appreciate your help... also to other guys here....
No opamp will work at those frequencies. If someone says otherwise then they are most probably fibbing for the purpose of separating some hard earned cash from your wallet.
Out of curiosity, why would anyone want to make such a device anyway? I mean, I've seen it asked here plenty of times before. It just seems rediculous.
Out of curiosity, why would anyone want to make such a device anyway? I mean, I've seen it asked here plenty of times before. It just seems rediculous.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
