REQUIRE A CORRECTED CIRCUIT --FROM SGS THOMSON -TDA2006--SCHEMATIC - Page 1
Forum section: electronics / projects

author: KAPTRON
author_rank: Newbie
timestamp: April 01, 2017, 01:32:52 pm
content: Hellomy question is -----tricky --(not an advanced or amateur electronics buff ) just average /experienced audio circuit fanatic)Can anyone redraw ---a faulty growler /distortion /grumbler circuit --that I have tried --for years -to tame"TDA 2006 ----the 3 rd schematic fig 15 (single 12 volt supply ) on SGS Thomson PDF --This circuit has baffled /angered many experts on many forums --They simply refuse to post /submit an IMPROVED or CORRECTED version --that does NOT CRACKLE distort on mike input !Please read my question ---I would love a SKETCH OR DRAWING OR SCHEMATIC --of a FUNCTIONAL TDA 2006 amp =====that amplifies voice ot clean guitar input at 12 -watts average ==-- That's all -----if someone is REALLY WILLING to BUILD /CONSTRUCT this troublesome AMP CIRCUIT----And finf the glitches with the 22 uf caps or other problem components --/reshuffle --Then --it will clarify --how to CORRECTLY build this circuit--( without a long diatribe on square wave /oscillationvoltage flip flop & other complex mind boggling jargon ---)Just a corrected TDA circuit --that WORKS ---PLEASE/??Really appreciate anyones help to tame this monster !best regards--Kaptron (a dozen circuits later --triple checked in EVERY way ---identical to FIG 15 ---single supply --DOES NOT AMPLIFY without hum & awful crackle )nb ---all the other TDA 2040 --- 2003 -amps--- I have successful constructed --NO distortion at all !

author: Neganur
author_rank: Unknown
timestamp: April 01, 2017, 01:34:42 pm
content: Mind posting the figure you're talking about?

author: KAPTRON
author_rank: Newbie
timestamp: April 01, 2017, 10:31:09 pm
content: Here is the SGS THOMSON -datasheet --Thanks Neganuron TDA 2006==SCROLL DOWN TO THE 3 rd schematic ----FIG 15 --( single supply 12 volt)The circuit with the 22 MF caps ---100 k resistors ---and the giant 22OO mf cap out to speakersThis growler has experts disagreeing ----no -one wants to build it --except myself --failed 12 times ====if a pro can assemble it & diagnose what horrors create the distortion --and submit a "corrected " TDA 2006 circuit--I would be eternally grateful---The mindboggling jargon /verbal complexity is totally unnecessary ----just replace or alter components --till a mike or guitar input amplifies normally --like the TDA 2040 <& 2005 I I have built years ago --If too much trouble --then apologies ---I will withdraw --many thanks ----Kaptron

author: wraper
author_rank: Unknown
timestamp: April 01, 2017, 10:59:26 pm
content: There is nothing wrong with that circuit. Probably your TDA2006 is faulty or Chinese counterfeit. Or something wrong with other parts, incorrectly assembled. I guess that chances of buying new genuine IC are very slim, as they are not manufactured for a long time. Therefore, most likely you will receive used IC removed from the old board or counterfeit (if sold as SGS/ST). Why using it anyway, it requires relatively many external components and has inferior parameters. BTW TDA2030 is pin compatible, and has exactly the same circuit in theDATASHEET. Also it should work instead of TDA2040 (you wrote that built amp with) with max supply voltage limitation.

author: Neganur
author_rank: Unknown
timestamp: April 01, 2017, 11:04:27 pm
content: Ok I found it's the same circuit as in my 1988 SGS Thimson Audio & Radio IC databook.Just a note right away, the circuit is specified with 10% distortion to reach 12W power with 1kHz into 4 ohm. It will not be clean, ever.Edit: I'd second the use of e.g. TDA2030/2040/2050

author: KAPTRON
author_rank: Newbie
timestamp: April 01, 2017, 11:12:49 pm
content: BRAND NEW TDA 2006 ---ic still made by manufacturer12 ATTEMPTS --NOTHING WRONG WITH CIRCUIT BOARDS -- !( for heavens sake --7 years --no expert has yet even ATTEMPTED----to actually construct the FIG 15 CIRCUIT ----(LAZINESS ? or could not be bothered say many In Europe --USA ----try some other IC is the usual reply ----UNBELIEVABLE!!!!No one wants to construct it --why ? TOO scared they might achieve similar distortion ?Others have built it --amateurs in India & Pakistan ---simply refuse to help !THAt IS WHY I AM BEGGING SOMEONE TO ATTEMPT _AT LEAST ---TO build & show me an alternative ----------?( This is a huge waste of time ---)better look for another forum ----back to the grindstone ----and they say these are TEACHING forums??

author: wraper
author_rank: Unknown
timestamp: April 01, 2017, 11:17:43 pm
content: Quote from: KAPTRON on April 01, 2017, 11:12:49 pmWHICH ONE?, uncle Lao in his garage?ST (formerly SGS) datasheet from14 years agosays OBSOLETE producthttp://www.st.com/content/ccc/resource/technical/document/datasheet/c7/f9/6a/3a/8a/e0/48/b5/CD00000125.pdf/files/CD00000125.pdf/jcr:content/translations/en.CD00000125.pdf

author: wraper
author_rank: Unknown
timestamp: April 01, 2017, 11:23:02 pm
content: Quote from: KAPTRON on April 01, 2017, 11:12:49 pmDon't claim bullshit, that circuit was built millions of times by many hobbyists and in commercial products. And learn writing normally, really annoying.

author: Neganur
author_rank: Unknown
timestamp: April 01, 2017, 11:24:04 pm
content: hey, it is really difficult to read your post with all this unnecessary use of capital letters and dashes.Also stop assuming all that stuff about me, "laziness, not be bothered" etc., or I'll just move on to the next interesting thread.You areso impatientand call it a waste of time. Try to be in my shoes for just one second and read what you wrote.You're not making it appealing to help you at all like this and I start to wonder if in all those 7 years, as you say, people have just been very annoyed and have ignored your requests.Anyway. I happened to be deep into guitar amplifiers 20 years ago and probably built all of the TDA audio amps.That circuit works but you cannot expect it to sound great if you expect 12W power into your speaker.If you can live with a lower power then it will be better.And I can assure you that a lot of guitar amps had TDA circuits exactly copied from the datasheets and theydowork.EDIT: Just had a blast from the past, those things got really really hot and a protection circuit would make them sound even more horrible. Make sure you have a beefy heat sink on it.

author: wraper
author_rank: Unknown
timestamp: April 01, 2017, 11:32:32 pm
content: I have a guess. you got TDA2003 or it's clone with original marking removed and new fake TDA2006 marking applied (very common thing in China). Pin-out is the same but feedback circuit is different (unlike other similar ICs from ST like 2030, 2040), hence it somewhat works but with distortion. Try using in it the circuit from TDA2003 datasheet and see how it works.http://www.st.com/content/ccc/resource/technical/document/datasheet/43/57/41/42/e4/e8/43/42/CD00000123.pdf/files/CD00000123.pdf/jcr:content/translations/en.CD00000123.pdf

author: KAPTRON
author_rank: Newbie
timestamp: April 02, 2017, 09:31:13 pm
content: ok Wraper -----want to be a big tough guy ?Go AHEAD ------PROVE me wrong --!----build and submit that circuit --if you think its all "bullshit "!(using such expletives --puts you firmly in the moron category !)Phd ..s on many forums simply gave it up --said th ircuit or schematic was a disaster !( One expert called it -(I quote-)-'3RD world junk --made by Spaghetti techs ' -----My speed typing is not perfect --but my command of English grammar will leave you in a cloud of dust --SHOW me your masters degree in English literature ?Your judgemental /prejudiced hostility ---is just a cover for a coward --throwing cheap potshots from behind the safety of his PC--If you bothered to attempt to read carefully & answer my original question ---and try to construct this AMP ( OH -I could not be bothered! said another expert )The TDA 2040 was easy ---as was the 2050 and 2003 ---- many years ago-!They all serve as -pre-amps into larger Guitar amp modules ---or alarms amplifiers for this community --However --as I said --laziness is a prohibitive factor on these forums ----but PROVE me WRONG ---!!-- Get a clear sounding-- working /non distorting TDA amp --All I asked for -----was a viable corrected schematic ,as pictures eliminate a thousand boring jargon filleddiatribe words!If its TOO much stress ,-PLEASE do not endure any more nasty projects from amateurs ------keep up the verbal abuse ----moderators on this forum --must be fast asleep ?pi)

author: Neganur
author_rank: Unknown
timestamp: April 02, 2017, 10:22:20 pm
content: if you want to contact the moderators you must use the 'Report to moderator link'.as for yourrequestsdemands, cba. Burden of proof is on your side.

author: mariush
author_rank: Super Contributor
timestamp: April 03, 2017, 12:09:43 am
content: kaptron , open the datasheet :http://www.st.com/content/ccc/resource/technical/document/datasheet/c7/f9/6a/3a/8a/e0/48/b5/CD00000125.pdf/files/CD00000125.pdf/jcr:content/translations/en.CD00000125.pdfRight on the first page :The TDA2006 is a monolithic integrated circuit in Pentawatt package, intended for use as a low frequency class "AB" amplifier. At ±12V, d = 10 % typically it provides 12W output power on a 4W load and 8W on a 8W.So they say the amplifier can produce up to 12 watts on 4 ohm speaker only if you're willing to tolerate up to 10% distortion, and you power it using a split power supply +/- 12v , meaning 24v (if you change to a single power supply).Obviously, when the power supply is only +12v, it would be impossible to output 12 watts.But go down :page 3 , electrical characteristicsVs Supply Voltage ± 6v minimum , ± 15 V maximumNote how they say the amplifier chip needs minimum +/-6v or minimum 12v (for single power supply). If you have a lousy power supply, or the chip is a weaker clone, the amplifier chip may turn off an on randomly distorting or causing problems.then you have :Po Output Power d = 10%, f = 1kHz : 12w at 4 ohm , 8 w at 8 ohmd DistortionPo = 0.1 to 8W, RL = 4ohm, f = 1kHz : 0.2%Po = 0.1 to 4W, RL = 8ohm, f = 1kHz : 0.1%So if you want minimal distortion, you should try NOT to go over 8 watts with 4 ohm speaker.You can also check figure 4 where you can see the distortion going way up once you go over 10 watts (when the amplifier is powered from 24v, more precisely +/- 12v). It's under 1% up to 10w, around 0.1-0.2% distortion below around 8 watts.So really your question is wrong from the start.. you can't get 12 watts from that circuit with a single 12v power supply, it's just impossible because the chip can't do it no matter what circuit you'd use. To get even close to 10 watts you'd need to power that circuit with 24 volts.For such high watts from a low voltage power supply (12v), go with a class D amplifier chipFor example, somethin cheap and in DIP package and with easy schematic would be TPA3122 :http://uk.farnell.com/texas-instruments/tpa3122d2n/ic-amp-audio-pwr-15w-d-ster-20dip/dp/1755372Here's the datasheet:http://www.ti.com/lit/ds/symlink/tpa3122d2.pdfIt can do around 10 watts at around 0.1% distortion with a 12v input in BTL mode ( meaning both audio channels are connected together inside and the amplifier is turned into a MONO amplifier) - see Figure 29 on page 15 (for 4 ohm speaker you only need to change the values to the right of "left_out"and "right_out" text, recommended values are on page 12 along with explanations.

author: Monkeh
author_rank: Super Contributor
timestamp: April 03, 2017, 02:49:51 am
content: Quote from: KAPTRON on April 01, 2017, 11:12:49 pmReally? So where can I get it?

author: wraper
author_rank: Unknown
timestamp: April 03, 2017, 10:47:58 am
content: Quote from: KAPTRON on April 02, 2017, 09:31:13 pmRegardless of that I don't have a time to waste on this, and I have no use for such crappy amps,I would need to buy TDA2006 first. Guess what, it's not available at any remotely reputable distributor. What a surprise. Actually entire TDA20xx line is discontinued by STMicroelectronics (it's not SGS-THOMSON since 1998). TDA2030, 2040, 2050 were discontinued much later, so, I guess, there is a reasonable chance to buy new and genuine, though.

author: Zbig
author_rank: Frequent Contributor
timestamp: April 03, 2017, 11:04:07 am
content: From NOW on --- I'm going to FORMAT -------- all -------- my POSTS like that ----- !!----- so AWESOME. Also -- i won a NOBEL prize in english LITERATURE ----!!---- and i REQUIRE you PROVIDE me a corrected schematics ------ for ------- 100W class D amplifier driven DIRECTLY by a ----- 555 ----- timer you judgmental / prejudiced COWARDS -----!!!----

author: Bassman59
author_rank: Super Contributor
timestamp: April 03, 2017, 09:40:19 pm
content: I'm not sure what this thread has to do with "General PCB/EDA/CAD Discussion."