Thumbnail is funny.... Grate... I follow your diagram of tda 7052 & tested it & using 4ohm speaker & 2 mobile battery...... I make mini portable amp which deliver very clean & powerful sound of midrange.... Thanks for inspiring me
Well.. looks like I need to order some TDA7267s! As I have stated before, I make cigar box guitar amps and put some in Altoids tins with either 3.5 mm or 1/4 inch jacks. I have used LM386N-4s but hoped there was a higher output chip for 9V@8ohms. So thank you for this comparison. Thankz
You can find them as new old stock on ebay. Unfortunately a disco'd part. Glad I bought a lifetime supply of them. A really lovely chip. Low part count, low distortion and high output for a non bridged design. It will eat 9v batteries quick given the higher output.
nice power test and comparison., can you do this also with some popular op-amp like tl072, ne5532, opa2134 etc.. also i am waiting for TDA7498 power measurement. thanks and more power to your channel.
I agree to a point. A lot has gone class D but many examples under perform compared to some of the older linear amps. OTOH some people latch on to some ancient parts or design. Same with discrete amps. Pretty much all of the ~45 year old designs have been succeeded by newer designs with better components (e.g. transistors with flatter gain linearity). We know a lot more on how to design a great amplifier these days.
pretty neat idea adding that 1% distortion as a reference... but how do you do it when you only have 1 signal gen? would like to use it myself because it takes a some time using the cursors every time
Can you have a Look at the MAX9710 and/or MAX9730? I think that are the most recent ones. Well the Package is a bit nasty, but for that it gives Adapter-boards.
These are surface mount parts. I'd have to look around for ready made boards like a lot of the class D stuff. Being surface mount would mean limited interest to a lot of the DIY crowd.
Hey John thanks for the reply I'll check that video out. Bringing that mic to life has made my electronics hobby better than ever. I've yet to get an amp from scratch to work for driving a speaker so I can do away with the integrated circuits. At this point that's where I want to take the mic to speaker project(s). What I have tried was the three stage 2n2222 amp circuit from AllAmericanFive but I failed somehow...
i found a ups for free with a bad battery . just before buying a new battery i hought lets give this 14.4v with 10amp because a battery cost 15$ and as soon as i powered on it showd 172volts 250hz on the out put so i put a 22w fan and the voltage rise to 190v and 2 amps were drawn then i put 2mobile charger and it rise to220 then i plugin in my pc and monitor and it quickly got to250v and 4 amps were drawn.. i got worried about the voltage and started lowering the input voltage but the out put voltage keep riseing so i got it to16v and it gone down to 220v then i switch on my pc and my psu cant give 12amps so i stop the test .. now i want to know what wrong with it .. it is a very cheap ups . i have no ups on my pc and should i get a new 1000va apc ups or repair this junkyard ups or search for another junkyard ups??and with higher load the frequency also got at 54hz
Funny, I tested the .3w LM386-1 and .7w LM386-3 and didn't see a difference in output power either. Could the former just have more THD at higher powers?
Distortion is about the same. I left the LM386 back in the 80's for ICs that could deliver more watts at 9v into a 4 ohm load yet still have low idle current draw for battery use. It still has good use in many circuits where max output is not critical.
The only thing I can find is the maximum output powers but during my tests I got 700mW or more out of both. My chips are all less than 10 years old however so maybe it only differs on older versions.
Good test but unfortunately is unusable because only lm386 is in production, all other are discontinued and risk of Chinese fake parts is too high. Thanks any way
hey, this product, the rockford fosgate pm100x1, is an all new class of electronics. it plugs from your headunit to your speaker. and doubles the power. without power from the battery. in the youtube video by SMD. look in the comments, a guy guessed how it works. can you try to make this product and a videos as well. they call it "freeloader"
It takes the output power from the head unit chip amp and stores / boosts it for dynamic peaks in music. Can it work? Yes, I think so. Will it work with sustained bass notes or modern compressed music? I doubt it. You can't get out anymore than the head unit can put out in that case. $400 is way overpriced for such a gimmick. Would love to rip it apart both physically and figuratively on my bench though.
its a dummy load with a series of voltage regulators and bridge rectifiers being fed into two capacitors that a basic amplification chip on board that used an isolated output. this is what another youtube commented. kindof understand it myself with the limited knowledge of electronics. so from what it sounds like to me is, instead of a varying impedance load like all speakers have while playing music, its uses a non changing ohm load, maybe 1 ohm, stores that power in the huge caps. then routes the signal to a basic amplification chip, double the wattage of headunit output. there are a lot of videos and pictures of this. wish you would try to build this. and tell me your opinion what was described if that circuit works. dont think it just boosts the bass when a strong note hits. thank you. this game changer should be used more and cost less then 400 a pair.
For years, I stick with TDA7052 for mini portable speaker with very good sound quality. And for bigger power that can running with Battery, use TDA7056. Many newer Chip here that can drive 4ohm speaker at 3V with good quality, like inside JBL Bluetooth speaker or Xiaomi MiFa, etc. BUT, TDA7052 or TDA7056 irreplaceable for me 😃♥️
It's good that you finally, after all these years, have started to test the chips properly at various voltages. Yet you don't always push the chips to their limits. You don't really explain why you are limiting the supply voltages in your testing, especially the 4 ohm loads - it's not very helpful saying something like "because of certain limits...". Finally - many of these little chips need to sink heat out via the pins (eg: TDA7231 needs 1/2 the pins into a copper PCB), so it's misleading to "undercool" them using breadboard, isn't it?
For example, the TDA7052A has a repetitive peak current of 1.25 amps. Running it at 7.5v with a 4 Ohm load would exceed this so I consider 6v the max. The datasheet itself contains no info on 4 ohm loads (although it should be able to deal with that given the published specs). My max measurements are as hard or beyond as you would want to push the ICs in normal use. The chips don't get that warm. If I can hold my finger on it then it is nowhere near thermal limits. The conductive strips in the breadboard do draw off some heat. The run time of the test is ~20 sec. Heat is a non issue in these tests. if it were, I'd do something about it. Someone complained because I used a big heatsink in the LM1875 test.
John - there is little point testing the amps at the manufacturer's specs, as they have already done that in the first place. If we want to know what the amps will do in that situation, we can simply read the data sheets. If they chips aren't getting warm, then they have headroom to be pushed harder. What you are saying that YOU make a judgement about how hard the chips should be run, and then don't even test them any harder than that. You don't test ANY of those chips at the manufacturer's maximum voltage, so why do you say that the "normal rated" voltage is as hard as anyone would want to push them?
TDA7267 is rated by ST for 4.5V to 18V, and you test to only 15V. TDA7052A is rated by NXP for 4.5V to 18V, yet you only test it to 7.5V. I am not necessarily arguing with your methodology, what I am commenting on is that you don't explain why you are setting limits. Your tests make me feel like you're testing an Intel 2.8GHz processor at manufacture's rated clock speed and at manufacturer's standard rated voltage, and then declaring that it can do 2.8GHz.... well yes, everyone knows that LOL.
I use the current limit and thermal dissipation limits stated in the data sheet to limit the test. Operating the IC at a given load can exceed the thermal and/or current limitation at the higher operating voltages. I see no point in doing that. Truth is I could have pushed these ICs harder in the test but I'd not recommend using them in a finished project that way. I'll be soon testing a pair stereo ICs but still won't be pushing them too hard. They are old favorites of mine. They are discontinued and kind of expensive on the 2nd market, so don't want to risk them. Take it or leave it, I'm conservative in these tests.
Thanks, and I understand. What you really need to do is explain that, rather than assuming that the viewers will inherently understand. Remember, we come to you as the expert, so you can assume that pretty much everyone viewing these videos will have less knowledge on the subject than yourself. So, what's obvious to you will almost certainly not be obvious to viewers. Cheers
Наука
Good work my friend i just shared this with my brother , keep em comin
Thumbnail is funny.... Grate... I follow your diagram of tda 7052 & tested it & using 4ohm speaker & 2 mobile battery...... I make mini portable amp which deliver very clean & powerful sound of midrange.... Thanks for inspiring me
Awesome. Thanks!
Well.. looks like I need to order some TDA7267s! As I have stated before, I make cigar box guitar amps and put some in Altoids tins with either 3.5 mm or 1/4 inch jacks. I have used LM386N-4s but hoped there was a higher output chip for 9V@8ohms. So thank you for this comparison. Thankz
You can find them as new old stock on ebay. Unfortunately a disco'd part. Glad I bought a lifetime supply of them. A really lovely chip. Low part count, low distortion and high output for a non bridged design. It will eat 9v batteries quick given the higher output.
nice video thumbnail !
nice power test and comparison.,
can you do this also with some popular op-amp like tl072, ne5532, opa2134 etc..
also i am waiting for TDA7498 power measurement.
thanks and more power to your channel.
I plan to do a load test on OP amps soon.
Takeaway...stay current with new products, don't get bogged down with legacy products because you're comfortable with them. Great video. TY
I agree to a point. A lot has gone class D but many examples under perform compared to some of the older linear amps. OTOH some people latch on to some ancient parts or design. Same with discrete amps. Pretty much all of the ~45 year old designs have been succeeded by newer designs with better components (e.g. transistors with flatter gain linearity). We know a lot more on how to design a great amplifier these days.
Do a power test on a TDA1519A
lm 386 comes in different versions N1,N2 ,N4 . The N4 tolerates 18v with output to 1watt
have you heard of the velleman k8060 amp kit?? claimed 200watts @.02%THD
There is a 1 watt amp circuit it requires tda7052a can just swap with lm386 on same circuit?
Tda7267 che potenziometro posso usare?? Da mettere in ingresso.
pretty neat idea adding that 1% distortion as a reference... but how do you do it when you only have 1 signal gen? would like to use it myself because it takes a some time using the cursors every time
I've gotten several questions on this so I will make a video on the subject.
Can you have a Look at the MAX9710 and/or MAX9730? I think that are the most recent ones. Well the Package is a bit nasty, but for that it gives Adapter-boards.
These are surface mount parts. I'd have to look around for ready made boards like a lot of the class D stuff. Being surface mount would mean limited interest to a lot of the DIY crowd.
That explains the low power...I bought a bag of 386's...any way to boost the output with a transistor stage?
I made a video on an LM386 power booster. It does work at 12 volts but the asymmetric clipping of the LM386 still limits clean output power somewhat.
Hey John thanks for the reply I'll check that video out. Bringing that mic to life has made my electronics hobby better than ever. I've yet to get an amp from scratch to work for driving a speaker so I can do away with the integrated circuits. At this point that's where I want to take the mic to speaker project(s). What I have tried was the three stage 2n2222 amp circuit from AllAmericanFive but I failed somehow...
i found a ups for free with a bad battery . just before buying a new battery i hought lets give this 14.4v with 10amp because a battery cost 15$ and as soon as i powered on it showd 172volts 250hz on the out put so i put a 22w fan and the voltage rise to 190v and 2 amps were drawn then i put 2mobile charger and it rise to220 then i plugin in my pc and monitor and it quickly got to250v and 4 amps were drawn.. i got worried about the voltage and started lowering the input voltage but the out put voltage keep riseing so i got it to16v and it gone down to 220v then i switch on my pc and my psu cant give 12amps so i stop the test .. now i want to know what wrong with it .. it is a very cheap ups . i have no ups on my pc and should i get a new 1000va apc ups or repair this junkyard ups or search for another junkyard ups??and with higher load the frequency also got at 54hz
what about d2822n/tda2822
The 2822 is a stereo IC not intended for this video. I did make a video on the 2822 a while back.
Funny, I tested the .3w LM386-1 and .7w LM386-3 and didn't see a difference in output power either. Could the former just have more THD at higher powers?
Distortion is about the same. I left the LM386 back in the 80's for ICs that could deliver more watts at 9v into a 4 ohm load yet still have low idle current draw for battery use. It still has good use in many circuits where max output is not critical.
hmm so how come they made the -1 and 3 versions if they perform the same in practice? Maybe the first few production runs had lower yields?
Good question. A quick look over the datasheet gives no distinction between the 1 and 3.
The only thing I can find is the maximum output powers but during my tests I got 700mW or more out of both. My chips are all less than 10 years old however so maybe it only differs on older versions.
Good test but unfortunately is unusable because only lm386 is in production, all other are discontinued and risk of Chinese fake parts is too high. Thanks any way
Where is Snickers, sir?
Snickers is resting on the floor beside me as I type this. If you are referring to the video, he does not make an appearance in every video.
hey, this product, the rockford fosgate pm100x1, is an all new class of electronics. it plugs from your headunit to your speaker. and doubles the power. without power from the battery. in the youtube video by SMD. look in the comments, a guy guessed how it works. can you try to make this product and a videos as well. they call it "freeloader"
It takes the output power from the head unit chip amp and stores / boosts it for dynamic peaks in music. Can it work? Yes, I think so. Will it work with sustained bass notes or modern compressed music? I doubt it. You can't get out anymore than the head unit can put out in that case. $400 is way overpriced for such a gimmick. Would love to rip it apart both physically and figuratively on my bench though.
Sounds like FREE ENERGY lol. Would be fun to see inside.
its a dummy load with a series of voltage regulators and bridge rectifiers being fed into two capacitors that a basic amplification chip on board that used an isolated output. this is what another youtube commented. kindof understand it myself with the limited knowledge of electronics. so from what it sounds like to me is, instead of a varying impedance load like all speakers have while playing music, its uses a non changing ohm load, maybe 1 ohm, stores that power in the huge caps. then routes the signal to a basic amplification chip, double the wattage of headunit output. there are a lot of videos and pictures of this. wish you would try to build this. and tell me your opinion what was described if that circuit works. dont think it just boosts the bass when a strong note hits. thank you. this game changer should be used more and cost less then 400 a pair.
For years, I stick with TDA7052 for mini portable speaker with very good sound quality.
And for bigger power that can running with Battery, use TDA7056.
Many newer Chip here that can drive 4ohm speaker at 3V with good quality, like inside JBL Bluetooth speaker or Xiaomi MiFa, etc. BUT, TDA7052 or TDA7056 irreplaceable for me 😃♥️
It's good that you finally, after all these years, have started to test the chips properly at various voltages. Yet you don't always push the chips to their limits. You don't really explain why you are limiting the supply voltages in your testing, especially the 4 ohm loads - it's not very helpful saying something like "because of certain limits...". Finally - many of these little chips need to sink heat out via the pins (eg: TDA7231 needs 1/2 the pins into a copper PCB), so it's misleading to "undercool" them using breadboard, isn't it?
For example, the TDA7052A has a repetitive peak current of 1.25 amps. Running it at 7.5v with a 4 Ohm load would exceed this so I consider 6v the max. The datasheet itself contains no info on 4 ohm loads (although it should be able to deal with that given the published specs). My max measurements are as hard or beyond as you would want to push the ICs in normal use.
The chips don't get that warm. If I can hold my finger on it then it is nowhere near thermal limits. The conductive strips in the breadboard do draw off some heat. The run time of the test is ~20 sec. Heat is a non issue in these tests. if it were, I'd do something about it. Someone complained because I used a big heatsink in the LM1875 test.
John - there is little point testing the amps at the manufacturer's specs, as they have already done that in the first place. If we want to know what the amps will do in that situation, we can simply read the data sheets.
If they chips aren't getting warm, then they have headroom to be pushed harder. What you are saying that YOU make a judgement about how hard the chips should be run, and then don't even test them any harder than that. You don't test ANY of those chips at the manufacturer's maximum voltage, so why do you say that the "normal rated" voltage is as hard as anyone would want to push them?
TDA7267 is rated by ST for 4.5V to 18V, and you test to only 15V. TDA7052A is rated by NXP for 4.5V to 18V, yet you only test it to 7.5V. I am not necessarily arguing with your methodology, what I am commenting on is that you don't explain why you are setting limits.
Your tests make me feel like you're testing an Intel 2.8GHz processor at manufacture's rated clock speed and at manufacturer's standard rated voltage, and then declaring that it can do 2.8GHz.... well yes, everyone knows that LOL.
I use the current limit and thermal dissipation limits stated in the data sheet to limit the test. Operating the IC at a given load can exceed the thermal and/or current limitation at the higher operating voltages. I see no point in doing that. Truth is I could have pushed these ICs harder in the test but I'd not recommend using them in a finished project that way.
I'll be soon testing a pair stereo ICs but still won't be pushing them too hard. They are old favorites of mine. They are discontinued and kind of expensive on the 2nd market, so don't want to risk them. Take it or leave it, I'm conservative in these tests.
Thanks, and I understand. What you really need to do is explain that, rather than assuming that the viewers will inherently understand. Remember, we come to you as the expert, so you can assume that pretty much everyone viewing these videos will have less knowledge on the subject than yourself. So, what's obvious to you will almost certainly not be obvious to viewers. Cheers