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>Homemade speakers and audio amplifiers for our animals| | | [How-to] [audio]
enotik500
Message#1
04.04.10, 20:52
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Homemade speakers and audio amplifiers for our animals
Collect questions for writing ACF ever do you have when working with ICs TDA2822 and tda7050, assembly amplifiers to them, operation, and all you wanted to ask, but did not dare

Questions or post in this thread or in PM!
Thanks in advance for your understanding and your participation! : Thank_you:
ACF is already written!I am waiting for your photos Collection Amplifier for accommodation in FAQ,.
For questions you are welcome here, either in the facts!
: W3bsit3-dns.com:
FAQ on the creation of an amplifier for our devices

Post has been editedHanzo - 03.10.10, 09:43
i900-vrn
Message#2
31.10.08, 07:13
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Well, gentlemen, craftsmen, spread sdes photos of your operating time (preferably with detailed diagrams).
The first went to:
Here is a schematic diagram of the amplifier
Power supply: 8-15V
Power: 2 ohms with speakers: 20 watts; at 4 ohm speakers: 10W
Posted image

I think the scheme has drawn more or less clear, but just explain:Earth(Common wire, ground literally do not) it connects the minus power, speakers cons cons of inputs and outputs, as well as all that is indicated in the diagram as a few dashes of different sizes under each other. Incidentally, the jack minus the outermost contact.

Speakers I took from conventional computer speakers.

Photos homemadetillI can not put (forgot at home). Postrayus all zafotat soon.
i900-vrn
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31.10.08, 14:04
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And here is the promised photo beta (still without housing and with a large battery (then I'll feed from a small 9 volt BATTERY))
Posted image

And here is a photo card separately
Posted image
tushkan
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12.11.08, 21:48
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i900-vrn @ 31.10.2008, 4:04*
And here is the promised photo beta (still without housing and with a large battery (then I'll feed from a small 9 volt BATTERY)) [attachment = "135685: SNC00161.jpg"]

and at this point how much this little Batteries? : Rolleyes:
based on the output 10vatt?
have ready the Chinese amps for little money on batteries.
whether or not to make a fuss?
and creative - a great thing !!!
i900-vrn
Message#5
14.11.08, 16:09
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I did Accum 12B 3-Batteries from mobile phones (900 mA \ h). It holds four hours.
rn9fal
Message#6
17.11.08, 07:12
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i900-vrn @ 14.11.2008, 7:09*
I did Accum 12B 3-Batteries from mobile phones (900 mA \ h) ...

This "package" to charge the whole problem, because not everything here is simple. In a parallel / series connection of Li-ion batteries
process "right" ceases to be a simple charge. Here there is a whole series of problems, and that their
invented to solve the entire device. In general all this on the forums model aircraft has since exactly
there is the most powerful "Battery attendant" live, not like a phone, "sculpted". Charge alone - uncomfortable
and, again, is detrimental to the batteries when such exploitation. At the time, I was engaged in this problem, because
on my last PDA battery was just horror - had izgolyatsya.

Post has been editedrn9fal - 17.11.08, 07:13


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i900-vrn
Message#7
17.11.08, 15:33
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Yes, the fact is that I am partially familiar with this kind of garbage, after all, a radio amateur with experience, but now I’m just too lazy and before and after each charge I re-solder the battery (in series-parallel. At the same time, I removed controllers from ALL Akums. Ie The circuit works from series-connected batteries without controllers, and it charges when connected in parallel under one controller. True, this is tedious and difficult. So there is an idea in the near future to make an additional circuit that automatically switches all this, i.e. controlled by charging connection)

Post has been editedi900-vrn - 17.11.08, 15:35
LeXX-kiev
Message#8
19.11.08, 03:29
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That version of the amplifier is more powerful and is easier:http://www.alex-z.narod.ru/electro_amp_1.htm
AimCube
Message#9
23.11.08, 17:28
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LeXX-kiev,Well, you posmatryu then given a compact portable version, and on the bottom of your stsylku napisno:
ATTENTION! Use only with the power supply capacity of not less than 200 W. To make the installation of the amplifier only when disconnected from the power system unit. Invalid electrical contact wire speaker with PC cases and other conductors.
LeXX-kiev
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25.11.08, 02:20
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AimCube,
And replace BP computer to compact battery?
For example the same as at of Default
_______________________________________

i900-vrn @ 31.10.2008, 13:04*
And here is a photo card separately

Termopatu mikruhi between the radiator and forgot

Post has been editedLeXX-kiev - 25.11.08, 02:22
i900-vrn
Message#11
30.11.08, 12:53
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LeXX-kiev @ 25.11.2008, 2:20*
Termopatu mikruhi between the radiator and forgot




It was only a trial version, it can be seen in the photo, I even just screwed thread radiator. And right now, all the rules, and thermal paste and a normal radiator and screwed and not strapped. By the way, I did a column and left only the normal case for the amplifier:
Posted image


And my photo BATTERY:
Posted image
Kolyan777
Message#12
02.12.08, 16:58
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and small usilochek (built-in) can be done? and what my pet two motorolovskih speaker does not pull (spoils the sound)
i900-vrn
Message#13
03.12.08, 13:43
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Built-in where? in the column or the beast? If the column-is quite real. If the PDA-vryatli you will be able to make such a small amp and besides, he's warm + will be quite expensive (especially if mikruhe Series MAX (they are quite small)). While all depends on quality of your desires, possibilities, as well as the amount of empty space in the animal. All of the legend especially IMHO
Kolyan777
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03.12.08, 17:21
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I would like to the beast;) is not much kakoynibud purse, just what would a little bit stressed and all: blush:
i900-vrn
Message#15
05.12.08, 18:54
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Kolyan777 @ 3.12.2008, 17:21*
not much purse kakoynibud

Well this is easily possible even on a single transistor with a minimum of elements, so that the body fit. Good luck!
Kolyan777
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06.12.08, 20:58
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? Write me more is how a transistor and where to solder it: sveta:
alex2190
Message#17
07.12.08, 12:45
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Check out the creation
Chips (fish angler)
A length of about 0.5 meters
Weight approximately 4kg
2W amp

Picture
Picture
Picture
Picture

Then you hit the hand remains mafona (with part of the speaker grille).
Fortunately because of their folded - turns the head.
I need to somehow it will collect the chips.
In her eyes seen it create audio chip
Almost a year to think out what is creating stuff with, what use
And how it all hold together and what would make the torso.

Were available such devices
PDA ipak2190,
yusb charger (home-made assembly 4 pieces of AA Batteries 2500mAch)
bluetooth ZhiPieS,
mp3 player

All this required periodically charging the most important thing somewhere all the time to go ...
On IPAK speaker identity is quite weak.
I decided that this nada FSE combined into a single package.
So will amp for PDA and charging.

As a result, its utorbe it comprises:
LED backlight,
Chinese power supply,
stereo unit ULF (amp from the Chinese-mafona gathered from what has got)
3 speakers (two speakers, eye, inside the third-basses on the head)
put sound selection switch PDA / s MP3 player,
charger for PDA (block stabilizer 5B)
charger for bluetooth ZhiPieS (flow regulator to 5V)
Batteries from radio 12c [for autonomous operation amp] (which found their poludohly nezhalko)
yusb charger to the charger [battery life for PDAs]

I had instead of current limiting resistor yusb charger into the jaws Fishka stick a light bulb (now out of the mouth weak light)
The eye rings were light emitting diodes (so that the red eyes)
It took ische lights - will mean fish angler (deep-water predator)

The belly part of the fins and the tail had to make papier-mache (paper + PVA glue)
The head of plastic, cold welding and avtoshpaklёvki.
Sealed design is not provided

Because it weighs about 4kg weight it is to swim 100 pudof will not.

During the six months it was also found a bunch of design flaws
-plohoe cooling (Chinese transformer)
-hrupkost (you can not drop it, do not ply)
the connectors have hlyupkie PDA / fragile (with miniUSB would be much easier)
-Small (nowhere else to put the toggle switch)
-podsvetka too small,
-capacity Batteries do not have enough (in amp)
s Lithium Batteries do not like to sit long on the charge,
-tyazhёlaya.

Maybe someone will collect something without these drawbacks?

Attached images
Posted imagePosted imagePosted imagePosted image
Tiktaalik roseae
Message#18
07.12.08, 14:39
Crazy CroCos
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alex2190big fish simply a masterpiece!


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awp_alex
Message#19
07.12.08, 16:55
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i900-vrn

a power amplifier transistor for: D
hochyu I see it: rofl:

radio amateur with the experience: D Oh well
as the time you have a month or two

At first
Take at least one normal electronic circuit
and show where there is a land with a few dashes of different sizes under each other
housing has one dash but no land,
do not confuse the electronic circuits and power electrical circuits

Secondly
Power supply: 8-15V
Power: 2 ohms with speakers: 20 watts; at 4 ohm speakers: 10 W [/ u]
he came up well done,
Che did not say then about the frequency response and harmonic distortion at about
this power equal to 10% will be one in which cod and wheezing

typical Power steering passport THD = 10%
4cm - 6W
3.2Om - envelope of just 7.5W
2nd - 10W
1.6Om - 12W
the actual operating capacity of the chip where it is possible to listen 1-2Vt
so the Chinese recorders where it costs more than the dynamics are not 1-2Vt

Thirdly
so if painted in the scheme of the capacitor voltage
shew them to people that they have not povzryvalis (16B)

fourthly
I saw the power amplifier is less work on the 3 transistors
but one is probably the masterpiece can narisuesh
power amplifier stage consists of matching
voltage amplifier and amplifier is at least
Plus feedback and correction circuit
I guarantee you will be more compact on-chip

By the way here is the template inclusion
http://radiovek.boom.ru/Audio/5w.html

conclusions
for the efforts done, but for zero knowledge
so go take a primer and teach materiel and not confuse people

P.s. radiator thread is the power of fellow, and then shook his tape
around that he better cool it is also correct

Post has been editedawp_alex - 07.12.08, 17:32
vic_po
Message#20
08.12.08, 18:11
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awp_alex
You for it even forgot to scold the battery. ;)
awp_alex
Message#21
08.12.08, 19:59
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: Rolleyes:

about batteries is another story

current if in brief
3 BATTERY charging through one controller is also a force
usually all the schemes are calculated on preregruzku 1.5 times but not in the three - the conclusion is obvious
Well, of course not afraid because he has two controllers in store) for him))

Parallel Charging Batteries also power,
There are several conditions that I doubt that they are respected
1) They must have the same capacity
2) the level of discharge of Batteries must be the same
otherwise received one charge and another yet
or one charge and the other for 5 hours ago charge (as a result of overcharging - not the best thing for them, the more there is no controller)
3) Akuma must have the same service life, it is desirable to another company and model different turn point above

higher prerechislennoe greatly affects the lifespan and battery life time

but oh well enough yet

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