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Mittelwellen Sender Bastel Video Anleitung zum Nachbauen – eflose #597


Hi folks, today is about a medium-wave transmitter
by Stefan0719 of virtually no electricity consumed with a 9 volt battery
and works really great frequency Stable is working super well so that one with
AM radio as now with the present or can the well-received by other radios.
You need a board and a saw, because best sawed her then first as a
Strip from the starting page, and the strip sawed her then piece by piece
louder so small, I’d say, as small pads. Then you still need glue, I suppose
now there times superglue, but other Adhesive goes, respect, care, the
sticking the finger and the eyes much more than the pads can be tricky. And, you need
a BC547 transistor and a few others Components, the plan to I show you yet.
But now I’m starting first on a coil to create, to do I now again
a strip of paper which I simply times have somewhere demolished one mignon battery
and wrap the strips of paper to the Mignon Battery. Just because the paper strip
rumwickeln beautiful, and at the end before it is finished here I glue the piece as yet
fixed, I try the time now that I Here glue coating, the adhesive is fairly
liquid, here comes the same pretty much out … and glued on. Oops the sticks really everything
the fingers, so the other adhesive is more recommended as superglue it. Now
stuck my fingers as tight … I would you Recommend very little glue to take
if you’re working with superglue that the paper then again from the battery
apprx. OK. Then we take a copper lacquer Wire, so 0.3mm around and wrap the 60 times
around there, we leave a little wire-free, 60 times wrapping. So after the 60 times since
is wrapped around you can start with the the end as briefly as twist, here
see that it is about 1 cm, so 1 cm of the package width. If one has then
then you can to, the paper with the battery very carefully pull out, very carefully
pull out, then we have an air-core coil with 60 turns. Of the pads we need
10 items, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10th I Stefans diagram now times
made a plan, the circuit of Stefan0719, and that’s really a very good
Circuit works very well, so I have already tried it have already assembled.
As a transistor can be a BC547C or BC547B BC548B or take or BC547C, then
from base to ground each 2 times 1n, of Collector to ground, respectively 2 times 1n
1n are there that the whole is stable, the Stefan has discovered that the oscillation frequency
is stable, that they can not in time with the Audios the frequency changes but then only
the amplitude quasi. then here we have a 1n capacitor and the coil, the coil, the
we wound and 3.3 K on the basis of Collector, then the resistance 2,2K and here
a 100 nF to ground, the high frequency the shorts and over 47K attached to the
+9 Volts and there’s a 100 uF electrolytic capacitor that the 9 volts are stable there. then here 470n
Condenser with 150 ohm resistor in series for audio, 150 Ohm from the basic to the Audio
To protect source because many audio sources Phones give a kind of PWM Audio out the
is hardly filtered, the only one from a from switched digital, and if it turns
then pretty much current flows through the Can 470n and 100n on the crowd and the
damage the audio output stage may, therefore 150 ohms before that, as a precaution,
then nothing can go wrong. I have to once made a construction plan. What we
need are capacitors, a 100 nF Designation 104, a 470 nF with the label
474, a 100 uF and 5 times 1 nF, designation 102. The 100 uF is a Elko and here
are so small ceramic capacitors, there must 102 draufstehen on which and on the 104,
and here 474, you can do that from 4 pieces 100 nF make, so 4 pieces of parallel
the 104, then you would get 404, which would also function. We need a resistors
150 ohms which is brown green brown golden, a 2.2 KOhm red red red gold, a 3.3 Kohm,
orange orange red gold, and a 47 Kohm, yellow purple orange gold. Values ​​should
be respected otherwise it does not. Then a BC547C or BC547B then a
Battery Clip best for 9V still, and the audio input here an audio
Source off and the coil of 60 turns on one AA battery, easy rum paper,
60 turns from the top wire, which of the Disconnect battery and then would have to
function. First of all times the pads position, we have 1 2 3 4 5 6 7 8 9,
So as a square, and here another. The Let distance between the pads big enough
but not too big, just so that the resistors, the components fit nicely in between. Of the
Transistor is here with emitter connected to ground soldered, then base here and collector here.
We do now first stick the pads. Then I’ll start with the first pad at times,
the superglue on, I’ll give a little them on the board, since the same runs pretty
get out much. A little on the board and then the pad simply pushing it and press down firmly.
That should there be, be careful that you do not get super glue on the finger,
I have now a little short at the edge, but it is already functioning, I think.
then the second pad that so wrong that I one component get in between. The second
Point here, here set about, then I can stick the second pad and press, then
The third time here, just a little seconds Glue it, shove the Third and press …
and then 4 5 6 7 8 9 I’m doing right now times … Since the glue dries not as fast
I am now even 2, the back A as, the second as back and press firmly, firmly
Push. The third here and plan, then Three again, 1 … 2 … one here, reasonably
just two here, drop it and stick, and the third here, and it …
It can still move a little first seconds. Then we need one more thing
here since the 10th Pad … So after the glued we let that dry. If we
have then I can saw out before, I have now not cut out so beautiful,
As I am unfortunately a bit crooked but One can indeed still somehow loops.
So then I now have all the components insofar All, I have a battery clip
the 9V, our coil with 60 Turns, which was previously on a AA Mignon
Battery, the circuit board with the solder pads, a 150 ohm resistor brown, green brown, a
2.2 Kohm resistance here, red red red, a 3.3 KOhm orange orange red and a 47K the
would yellow violet orange, in the case It is a 5 color resistance. So 47K 3.3K
2,2K and 150 ohms resistors. Capacitors we have 100 uF, then we need 5
times 102 5 times 1 nF, then we need a 470 nF 474, and a 100 nF yet, 104th
In addition still a BC547. The first thing we do According to plan, we must be connected from the bottom right
the pair and the second row completely. 1 2 3 1 2 Connect and then connecting with
Wire. For this purpose, we are looking at some resistance and solder the here and here, and the other
Wires from the resistance here and here. We accept solder, we have to combine the two,
and 3 connect. Then I take now the wire, solder towards the already here, then
Here, I can with tin solder it still correct, wait until the solder joint is cold then
I again after the soldering that the resistance is properly soldered nice ok and if
that’s cold CIH can nip off the wire. Now we need to bridge the Three,
1, solder it so that it keeps somehow, then here hinlöten and here, because it,
properly solder it, and on it there. Then can I nip off the, okay. Then next
the transistor, which comes out here, the emitter need to ground the base here and the collector
up here. Then I can already the Soldering base here, the emitter has to
show the board. The collector talk Solder that basis I had a little bent
that is a little shorter, now can I solder the so hinbiegen and the emitter.
Emitter is on the board, the base here, the collector here. Then we could equal
starting with the 5 piece 1n the 102er as suppose I ever 2 that go from basic
to ground so I can the 2 right from the Middle solder here on earth. These solder
I first one on that he keeps up here and wait until it is cold, then I can do it
hindrücken there and solder here on earth again, with fresh tin, then wait until
that is cold, then I can the neighbor take, I can now again here
mooring up, then I can do it nice hinbiegen, to ground, turn down here and
even down here with solder it. Not both Pins simultaneously in quick succession solder,
If both pins are liquid is the component from. Then I can because even a little tin top
give that really have contact, OK, the first two 102er that would 1 nF
plan. The next two 102er need of Collector to ground. I’ll take the first
102er and solder him here, then press I him down to the ground, then I can do it
Solder to ground. Then I can the Second take the second solder here, even down
turn, the solder also grounded. Then the point after soldering that he certainly Contact
Has. We still have a 1n (102) left. He who comes from this pad to the pad. I do
because it tin, solder one pin because it, wait until it is cold, then I bend over to
to the other pad and solder the fixed since. Even a tiny bit of tin to and fits.
the 102er we have a soldered, then goes it further. Let’s start with the resistors
to which the needs of 3.3K here center on here above which is the orange orange red. The can
I to solder in the middle first. If you have new components then you should
Shorten component pins in advance. After the here is fixed
can I plan push him there and there also
soldering. then a little turn and a little after soldering. Okay, then we have not
more very many components, we could use the 150 ohm resistor soldering already, which is
from here to here, because I’m doing it exactly so, once tin pads, then the resistance
to solder. If the holding since then I can solder it him at the other end. If I
have and that is cold then here again briefly after soldering. From here to here is the
470 nF because I solder also here times since plan to wait until tin is solidified, then
Can I solder it here.
470nF is 474. From here to here comes yet the 2.2 Kohm, I might have previously
have to make … I make the pin again from and solder only the 2,2er there on it, then
Can I bend and on the solder pad Here solder, then the capacitor again
soldering. The 2.2 Kohm is red red red. Before I anlöte resistance to 47K I need
still the 104er coming from here to earth, so I solder the well to the solder pad here
and the solder on the ground. Only no Make a bridge between solder pad surface
and mass. The 104 is tuned, I can somewhat bend yet, I need to from there to
since the 47 KOhm Solder yet. I solder where once here and then because
all meet, which is the power supply for the transmitter. And do it again hot,
minimal tin fits to and is soldered. Only the 100 uF capacitor remains
coming from positive input to ground, with the negative pole to the ground board! Then solder
I first of all the plus side, important is that the right anlötet, + on the
Pad because where there is no, then minus to minus the board. Now the board would be
nearly finished, what is lacking is the pair Here, this is the coil with 60 turns,
we can solder directly. 1 and 2 Then the battery clip, minus comes on here
Plus since the main board and the pad Plus as solder where the 47K resistor and
the Elko meet, minus just the PCB solder on the board a little tin,
there is minus. Then we need audio, I have here an audio cable, since I have to
Connector 2 wires soldered, mass can here I solder here next, I can in the
Corner, go here, the audio wires from minus Solder here, the audio input wires from
it has since where the 150 ohm resistor. Now the whole thing is already finished. Then have
I once infected a 9V battery, on the audio cable phone and let times
Play a song. Then I go to the Radio da forth on medium wave and seeking the
Stations. The transmitter takes approximately the Be mid-scale … There he is! There is
the transmitter! The inductively transmits over the Coil, you can hear him well. If the whole thing
so sound that it is overridden you have to just the player the volume back
accept or turn quieter, then the quality good as well. I still have another station
on medium wave on it but in the distance the transmitter is stronger than any medium-wave transmitter,
so from 30 – 40 cm is the medium-wave transmitter stronger. Thank you for the really great Stefan0719
Sender! Works perfectly!

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