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Полосовой режекторный фильтр audio
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  • ruRussian
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00:00:01
money spent in online stores to your account
00:00:03
link in the description let's look at a
00:00:08
spot filter on the circuit throw inductors and
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capacitors here's what Krieger to know from
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each link nc represents one
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order here I'm drawn a
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third order low frequency filter 1 2 3
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means there is a generator that
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changes linearly from the start of 10
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camps of 1 gigahertz and intends for voltage
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and stream such a graph to be found on the
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frequency characteristics and along the axis itself along
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us the frequency is this voltage amplitude
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voltage and stacks these are thoughts, look at
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us depending on the frequency all the signals
00:00:59
that are low purity comes they can be
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skipped
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it filters everything above 100 megahertz
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rest completely extinguishes that is, it
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passes even the lower frequency
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of course this is a low-frequency filter
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for radio equipment for power supply if
00:01:21
you look at the business choice of the heart for
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power supply then here there are different
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chokes installed there
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electrolytic capacitors are installed Now, if
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there is no inductor, they can put a resistor, and
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here from several y in this way
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to reduce the ripple large capacitances are
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Internet-based with inductances and
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chokes, they create good filtering
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in different ways, they coordinate the filters by doing,
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but for high frequencies, photo examples, I
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need to make an antenna that would
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transmit you there, for example,
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to 100 megahertz, everything else
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I filtered, I’ll do something like this with
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coils, a table to the wires,
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I’ll put such containers
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because it’s that you’re so crooked, so
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hunchbacked, kind of uneven, this indicates
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that the filter of the person who disagrees with
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him to make a lantern in a transaction of the same
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capacity, the real capacity is calculated
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there up to picofarads and efficiency and
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this third order is coordinated, the thing is
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that this is one link, it is
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uncoordinated, each
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inductance, each capacitance is selected for this
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filter, but ideally
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it means everything that the bear lets these states through,
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stopped even cutting off as
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it is,
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this is a low-pass filter, a
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high-pass filter frequencies started inputs lerny
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we throw capacitors again,
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we arrange them differently, which means, as you
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remember, for a low frequency, a
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capacitor is an
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infinitely large resistance,
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remember the formula: one divided by
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bonds and 0 hour such and such it would not
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pass, but with an increase in frequency,
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the higher the frequency this means that the timbre of this
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with an increase in frequency is also a break, this is a
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short circuit, it turns out that the
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higher the frequency this is closed and these
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seem to disappear, here you go, it
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lets us through everything that is higher,
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for example, there
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is one, well, you need to apply it somewhere here,
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you can look at it and put it on
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such a twig frequency 3 is itself 3030
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megahertz already this filter will
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pass everything above 30
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please high frequency filter
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sometimes we need to filter the signal
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not high low band frequency that is so
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that it passes for example at
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some frequency and here I have it here
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level in Russia, usually look at this:
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we have 40 megahertz and up to about 100
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megahertz, in this band from 40 to
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steel, it is interesting to make a filter,
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for example, to make an amplifier of some kind of
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television antenna, or there,
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about the launch of a television antenna,
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we make such a bandpass filter for all the
00:05:04
signals that will be located below, we
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can filter them,
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they will create interference for us already that
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above here is an example of a bandpass filter
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as I remind you that naturally it is
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not done the same way as I take any details
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but no ipad are approximately calculated
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and this form
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is calculated means more or more precisely
00:05:30
Depending on this, you can
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look at some kind of Bessel circuit there,
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and so on, there are
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several of their authors who came up with this
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copyright,
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who invented all this, there are filters and
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it is they who bear the name of some author of
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this one, ahead of the lantern, wait,
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but he showed the principle of a bandpass filter, there is
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still bandpass filter, but on the contrary,
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which cuts
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some area, for example, we made a
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filter that here we have parallels,
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parallel circuit, parallel
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quantum serial, so we
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combine the inductance capacitance of
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the circuit, so
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we get that it cuts here, which
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means purity there, for example, from 50 to 70
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there, families of megahertz from 50 to 77
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megahertz with this filter and we cut out everything
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else, we have about one here
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to attack everyone
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from if you look, but let it be from 30 to
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and then, more precisely, up to 100, so it
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cuts out everything, that is, if we make
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a receiver and we connect such a filter incorrectly
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parts and we will listen to the signal,
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but from 30 to 100 megahertz not a single
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signal will pass through this filter, we will cut
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out everything well, the attenuation will be there,
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which means each of this filter,
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one link gives 6 decibels per octave of
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acts, twice in general, the slope of
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this is determined by the number of filters
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why is there a third order here 1 2 3
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because the nominations combine this
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chicken well, and of one order it will be
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less pronounced the higher the
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order filter, the more these edges will be
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straightened, which means but the face does not have a
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high enough quality factor,
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so they use quansh or filters;
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its quality factor is there the order is higher and
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only for this higher like this and
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expensive quartz they use a piezoelectric element there and
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if the receivers look at what kind of d.v. I should be
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there with you.
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here there
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is plastic like this square to the
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workers at the input-output output
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or the middle case on here with a retro
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mechanical filter for example at 500
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frequency 500 kilohertz that the bandwidth is 3
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kilohertz the top this is 06 average
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frequency
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this is for telegraph this is for ssd
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it is used in various circuits and
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for the electrical filter, well, now I’ll show you
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which one, but Tony, there are various modifications, there’s this one,
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there’s this one, it means
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on TVs sometimes they use something like this,
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sometimes they use round ones, it means to do something
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that transfers the frequency from high,
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for example, from 800 megahertz to the
00:09:14
interval of women for the interval of purity
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36 not or girsa further for later vidiq to
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tidy up with such filters they are transferred
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and cut out to suit the characteristics there such
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said they come in different filters it’s a
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pity that it’s shown just this is a
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notch filter this is a bandpass filter with
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whom the designations
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are defined by these stripes clearly and
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designation schemes but unfortunately
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I don’t know 5 receivers are used, well,
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please, about old receivers, this kind of
00:10:00
filter is used, well, in principle, in
00:10:04
every receiver, and that is, these are
00:10:07
more modern, which means and but they are
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simpler, which
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means the more filters, excuse me, are covered, which
00:10:18
means the more good they are
00:10:25
characteristics from a TV, such
00:10:27
filters are used on gas
00:10:29
foreign ones, or yes, that means high-
00:10:34
frequency filters can appear in a
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box like this, which means, for example, for an antenna,
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so on, high-frequency for, in general,
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radio engineering with connectors, so on,
00:10:46
in general, there are different filters, I showed
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how you can read on I got this topic and
00:10:54
everyone went there

Description:

В ролике раскрыта тема - QUCS, ФНЧ, ФВЧ, Полосовой режекторный фильтр, от Советского Инженера Приглашаем на канал Советского Инженера! Здесь Вы найдёте уроки по радиоэлектронике, а также информацию по компьютерным сетям, ОС Linux и многое другое - как для начинающих так и для настоящих инженеров. КЭШБЭК c Aliexpress и других магазинов: https://backit.me/ru/cashback?inviter=7ryptn Поддержать проект: Яндекс кошелёк 41001479364390

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