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Message#1 09.04.10, 21:19 | |
Technohelp And yet one of [offline] Topics Curator Group: Curators Messages 722 Check in: 31.05.08 Samsung Galaxy S 2 SGH-T989 Reputation: 107 | Amplifier design FAQ Amplifier design FAQ | Homemade speakers and sound amplifiers Note: a sample instruction for assembling an amplifier on Burr-Brown OPA microcircuits ishere. The fundamental difference between the chips in this FAQ: TDA2822m - for speakers; TDA7050 - headphone. TDA2822m based amplifier general form pin layout (chip marking up) chip parameters stereo power on bridge start When the bridge is switched on, only the output power changes: typical switching circuit stereo pavement visual scheme Yellow circles with a black symbol - the place to connect the speakers Gray circles with a yellow symbol - signal input Pink circles - the place where the wires are connected (wire crosses without a pink circle - this is a wire cross: there is no need to connect them!) ChipTDA2822m- 1 PC. Resistor10 kΩ- 2 pcs. Resistor4.7 ohms- 2 pcs. Electrolytic capacitor100 uF 16 V- 2 pcs. Electrolytic capacitor470 uF 16 V- 2 pcs. Electrolytic capacitor10 uF 16 V- 1 PC. Ceramic non-polar capacitor0.1 μF- 2 pcs. However, the scheme can work with a minimum set of radio components: Electrolytic capacitor100 uF 16 V- 2 pcs. Electrolytic capacitor470 uF 16 V- 2 pcs. When assembling, let's say a small deviation from the tabular values of parts according to the rule “more is better” (say, instead of a capacitor of 470 microfarads, put 1000 microfarads). If after assembly the amplifier wheezes - check the correctness of soldering, supply voltage, input power (is the input volume too loud?) With proper assembly and serviceable radio components, the amplifier can not work. Capacitors have polarity, pay attention to how they are soldered! TDA7050 based amplifier general form pin layout (chip marking up) chip parameters typical switching circuit stereo pavement visual scheme stereo pavement Yellow circles with a black symbol - the place to connect the speakers Gray circles with a yellow symbol - signal input Pink circles - the place where the wires are connected (wire crosses without a pink circle - this is a wire cross: there is no need to connect them!) ChipTDA7050- 1 PC. Electrolytic capacitor100 uF 16V- 2 pcs. When assembling, let's say a small deviation from the tabular values of parts according to the rule “more is better” (say, instead of a capacitor of 470 microfarads, put 1000 microfarads). If after assembly the amplifier wheezes - check the correctness of soldering, supply voltage, input power (is the input volume too loud?) With proper assembly and serviceable radio components, the amplifier can not work. Capacitors have polarity, pay attention to how they are soldered! Post has been editedBlack fish - 21.01.16, 18:00 Reason for editing: Added link to BB |
Message#82 22.05.10, 23:58 | |
a guest [offline] Group: Users Messages 3 Check in: 22.05.10 Samsung WiTu SGH-i900 Reputation: 0 | What kind of amplifier on a TDA2822m microcircuit is better to assemble, according to a typical scheme or on 4 capacitors, and what is the difference? And then the desire to collect appeared, but knowledge is not enough)) |
Message#83 23.05.10, 09:33 | |
Technohelp And yet one of [offline] Topics Curator Group: Curators Messages 722 Check in: 31.05.08 Samsung Galaxy S 2 SGH-T989 Reputation: 107 | ghostlight, the difference in the number of parts that it needs to work, but the 4-konder circuit does not work with all 2822 microcircuits! Need to try. -------------------- Developer ������� download����for pda. AuthorFAK on amplifiers for PDAs. |
Message#84 23.05.10, 12:35 | |
User [offline] Group: Friendssavagemessiahzine.com Messages 57 Check in: 07.04.10 Reputation: 0 | I advise you to solder on the datasheet will work for sure! |
Message#85 23.05.10, 18:14 | |
a guest [offline] Group: Users Messages 3 Check in: 22.05.10 Samsung WiTu SGH-i900 Reputation: 0 | The circuit for 4 Conder does not work with all the 2822 chips! Need to try. This is an interesting info, the number of parts does not matter to me, the main thing is that it works. [Yuzerok]follow your advice |
Message#86 08.06.10, 13:22 | |
User [offline] Group: Friendssavagemessiahzine.com Messages 57 Check in: 07.04.10 Reputation: 0 | Tell me which speakers are better to buy so that they have a better sound quality (if you can link to a magician). First of all, thank you! |
Message#87 08.06.10, 16:57 | |
Guru [offline] Group: Honorary Gameday Messages 5234 Check in: 06.04.08 Sony Xperia XZ1 Compact Reputation: 1313 | Theme class like i used tosavagemessiahzine.comI did not find this one. That's just such a question, in my hd2 I just do not like either the sound quality or its volume. With the purchase and assembly of elements, I think there should be no problems. But the trouble is, in such a top communicator, all the details are very tightly packed, and the speaker is not the biggest there. Are there any other options besides external ones? -------------------- |
Message#88 08.06.10, 17:57 | |
Technohelp And yet one of [offline] Topics Curator Group: Curators Messages 722 Check in: 31.05.08 Samsung Galaxy S 2 SGH-T989 Reputation: 107 | looking for what you need .. I would have done an external one, if I were to spoil such a machine by embedding something inside .... -------------------- DeveloperShineohmzyksfor pda. AuthorFAK on amplifiers for PDAs. |
Message#89 08.06.10, 18:31 | |
Guru [offline] Group: Honorary Gameday Messages 5234 Check in: 06.04.08 Sony Xperia XZ1 Compact Reputation: 1313 | I also thought about it. But I want to add something. Are there any options for audio output (3.5mm mini-jack)? -------------------- |
Message#90 08.06.10, 18:52 | |
Technohelp And yet one of [offline] Topics Curator Group: Curators Messages 722 Check in: 31.05.08 Samsung Galaxy S 2 SGH-T989 Reputation: 107 | Semyon, read facts, everything is chewed: thank_you: -------------------- DeveloperShineohmzyksfor pda. AuthorFAK on amplifiers for PDAs. |
Message#91 08.06.10, 19:26 | ||
a guest [offline] Group: Users Messages 4 Check in: 06.06.10 Reputation: 0 | Here I assembled a circuit for 4 capacitors Tell me please how to remove the noise? powered by 3 1.2 volt batteries ...: unsure:: unsure:: unsure: | |
Message#92 08.06.10, 20:39 | |
Brick Shooter [offline] Group: Friendssavagemessiahzine.com Messages 502 Check in: 25.01.10 Meizu M2 Note Reputation: 22 | Trice, already said that this scheme is not suitable for all mikruham 2822! better to do on datasheet! ;) Post has been editedjaruto - 08.06.10, 22:33 |
Message#93 08.06.10, 22:17 | |
a guest [offline] Group: Users Messages 4 Check in: 06.06.10 Reputation: 0 | then if one speaker, then this is better? |
Message#94 09.06.10, 09:05 | |
On the dark side of the moon [offline] Group: Friendssavagemessiahzine.com Messages 997 Check in: 24.09.08 Xiaomi Mi A2 Lite 3/32 Reputation: 75 | Hello Amplifier call speaker died on asus p525. Found tda7050 in the case of SO8 - baby. I collected a bridge circuit from a datasheet - apparently very dependent on voltage. I connected the phone battery (3.7V at the time) - wheezing. What is strange - on datasheet can be up to 1.6V. I connected 5V usb - it seems normal. I want to power the animal from the battery. Will she go? If not, which one to choose with a minimum body kit and preferably in SO8? -------------------- My other car is Tarkus .. |
Message#95 09.06.10, 10:48 | |
a guest [offline] Group: Users Messages 4 Check in: 06.06.10 Reputation: 0 | Sketch pliz a mono mode for tda2822 for the most))): blush: .... I hope there will be a 2.5 w 8 Om norm? Post has been editedTrice - 09.06.10, 11:29 |
Message#96 09.06.10, 15:21 | |
Tube Sound Lover [offline] Group: Friendssavagemessiahzine.com Messages 1231 Check in: 27.12.07 Reputation: 275 | Guys have a question for you) See, let's say at the PDA, the interpenetration of the channels with the evaluation is bad! But the amplifier has all the norms with this ... according to the characteristics .. Tell me ... If the amplifier (for Headphones) is truncated to the PDA .. it will improve the interpenetration of channels ??? Or does he stupidly strengthen the weak signal of the PDA ??? -------------------- Htc U11 64/4 blue |
Message#97 09.06.10, 15:37 | |
Technohelp And yet one of [offline] Topics Curator Group: Curators Messages 722 Check in: 31.05.08 Samsung Galaxy S 2 SGH-T989 Reputation: 107 | tranceman111, That with the PDA, get it! -------------------- DeveloperShineohmzyksfor pda. AuthorFAK on amplifiers for PDAs. |
Message#98 09.06.10, 16:14 | |
a guest [offline] Group: Users Messages 4 Check in: 06.06.10 Reputation: 0 | Is it possible to bridge the tda2822 scheme for the most?))): blush: |
Message#99 09.06.10, 18:53 | |
Brick Shooter [offline] Group: Friendssavagemessiahzine.com Messages 502 Check in: 25.01.10 Meizu M2 Note Reputation: 22 | |
Message#100 10.06.10, 13:13 | |
User [offline] Group: Friendssavagemessiahzine.com Messages 57 Check in: 07.04.10 Reputation: 0 | I didn’t work very well according to that scheme, as the constant rattling and loudness is lower than the datashit bridge! Trice I’ve 4 pages spread out the pattern I’ve drawn up for the most soldering on it. |
Message#101 10.06.10, 16:07 | |
Local [offline] Group: Friendssavagemessiahzine.com Messages 131 Check in: 28.06.09 Xiaomi Mi A2 Lite 3/32 Reputation: 11 | Is it possible to make a small amplifier that would fit into the body of the smartphone? and I still can’t understand whether it is possible to make a stereo amplifier sound if initially only a mono is in a smartphone? I'm in this all full noob ((( Post has been editedworm5320 - 10.06.10, 16:07 |
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