BUILD - TDA2030A bridge amplifier breadboard build (Medium difficulty)

[@asfak.]

Subwoofer size? Watt? ohm?

[@Helectronics]

Definitely 8 ohm speaker, the bridged TDA2030A works well ONLY with 8 ohm speaker, I forgot that to mention in the video. The size does not matter, should be bigger than 3 inch and higher power value than 30 watts.

[@thomasr.5443]

@@Helectronics oops! I have an old 5.1 speaker System lying arround which utilises one TDA2030 for every speaker except the woofer. It's also connected in bridge mode but they used just a 25W 8Ohm speaker 😱 but I think the heatsink is way too small for seven TDAs, so what?! 🤪

[@Helectronics]

If it's crazy but it works, then why not! Manufacturers like to use components which are used to their limits so after a year or two the product will break so the consumer will have to buy a new one.

[@thomasr.5443]

@@Helectronics you're absolutely right! I plan to make a little guitar amp from the case and some of the components. I also plan to do it with a dual TDA2030 in bridge config so the sink should suit just fine with 5 TDAs less than original. It looks yours quite similar.

[@Helectronics]

You can use the bridged TDA2030 circuit as guitar amp, with that heatsink it won't get too hot, just don't forget to use 8ohm speaker!

[@hesamsaeede8872]

ممنون از این همه راهنمایی از اونهایی که علم خودشون و بدون چشم داشت در اختیار دیگران می گذارن واز اونهایی که این برنامه هارو گردآوری وباعث بخش. شدنشون میشن ممنون از همتون

[@Helectronics]

Thanks for watching!

[@thomasr.5443]

Very nice Video, thank you. I am not sure but I think biasing is not needed when using a symmetrical power supply because the input audio signal alternates around ground allready.

[@Helectronics]

Thank you for watching, if you mean the input biasing resistor, it is necessary, otherwise the circuit starts to oscillate.

[@edifierbass7821]

Yes a Chinese favorite audio amp chip the tda2030a, you can find it in any small audio stuffs like 2.1 speaker and mp3player well I can say it's reliable and durable

[@Mr.bonbon441]

Best tutorial with all possible troubleshooting . Thank you sir for making this video it helps..

[@Helectronics]

Thank you for watching and for your positive feedback, it means a lot!

[@SadPuppyMusic]

Cheers for the outro mate ! :D

[@sstechnologyhub]

Hi Sir, Could you please mention formula how to produce gain 24db as mentioned in your demonstration and as well in datasheet.

[@Helectronics]

Hi, if you are watching the TDA2030A datasheet, the R1 and R2 resistors set the gain of the amplifier. The formula is R1/R2+1 so to get exactly 24db gain you have to use 23kΩ for R1 and 1kΩ for R2, so 23000/1000+1=24. Thanks for watching!

[@bhartirasoi2456]

Can I use tested circuit for making amplifier. is it give me the good performance?

[@Helectronics]

This circuit can be used, the performance should be around 15 watts but depends on the power supply

[@amitghosh6966]

What should be the size of heatsink for two tda2030A ics mounted on same heatsink ? (In length and width)

[@Helectronics]

Hi, depends on what kind of speaker you want to use (4 or 8 ohm), also if you want to use a single or bridged configuration. I've made a huge mistake in this video, this bridged configuration only works with 8 ohm speaker and I've connected a 4 ohm, which makes the amp ICs to heat up really high. Thank you for watching!

[@amitghosh6966]

@@Helectronics I want to build two numbers of Tda2030A as two separate channels but mount on same heatsink and use 4 ohms speakers

[@Helectronics]

You don't need big heatsink, I saw TDA2030A permade circuits with approx 5x5 cm of heatsink (or even smaller), so if you use both with approx. 12x6 cm (bigger is better) that has to work well.

[@iblesbosuok]

Can C4, C5, R3, R4, R5, R6 and R7 network be applied to TDA1514 and TDA7293?

[@Helectronics]

I've found on the google bridged circuit diagrams of TDA1514 but it's not mentioned in the datasheet, anyways if you want to try it out 8 ohm speaker must be used, less then that can burn the IC! In the TDA7293 datasheet, it is mentioned the Bridge Application, quote: "Another application suggestion is the BRIDGE configuration, where two TDA7293 are used. In this application, the value of the load must not be lower than 8 Ohm for dissipation and current capability reasons. A suitable field of application includes HI-FI/TV subwoofers realizations. The main advantages offered by this solution are: - High power performances with limited supply voltage level. - Considerably high output power even with high load values (i.e. 16 Ohm). With Rl= 8 Ohm, Vs = ±25V the maximum output power obtainable is 150 W, while with Rl=16 Ohm, Vs = ±40V the maximum Pout is 200 W."

[@Helectronics]

To answer to your question, I don't know if the exact circuit and component values would work with those ICs, it's different for almost every IC. The only way is to test them on a breadboard.

[@RahulKapoorokb]

Soon. Nice

[@RahulKapoorokb]

Sir can you explain where you put 2200 mfd not used in diagram.

[@Helectronics]

The capacitor is placed between the output of the first amp (pin 4) and the speaker. The positive lead of the cap goes to the pin 4 and the negative to the speaker's positive lead. It is not obligatory to use there capacitor but at the output I've measured Direct Current(DC) with the oscilloscope, and that's why I had to use capacitor. DC is harmful for the speakers. BTW please don't call me sir, I'm just 26 years old haha.

[@bhartirasoi2456]

How to separate singal ground and power ground

[@Helectronics]

You try to make the signal and power ground traces separately and join them in only one place

[@GaganDeep-uw3vo]

How much rms it can give at 4ohms

[@Helectronics]

The output power should be approximately 30 watts, but I did not had measuring device that time to measure it exactly.

[@rogerakmoomoo2841]

The circuit diagram?

[@Helectronics]

facebook.com/Hobbyelectronicslovers/photos/a.1153873301405130/3964112227047876

[@Helectronics]

Also, you can find this diagram in the TDA2030A datasheet.

[@fretlessbass6787]

I am making the same circuit right now. Good audio qaulity. Could you help me getting the wattage rms? I am using oscilloscope.

[@Helectronics]

Okay, what kind of help would you need? First you will need a power resistor, 4 or 8 ohm, depending on what kind of speaker you want to connect to. Then you will need a sine wave source (signal generator, oscilloscope, phone application) and turn up the volume until it starts to clip the top of the sine wave. Then you will read the RMS voltage (before clipping), square that value and then divide it by the speaker's resistance value (4 or 8). Good luck with the build!

[@fretlessbass6787]

Helectronics so basically, i have done all what you said with a dummy load 8 ohms since my speaker is 8 ohms. My input was 1khz with .5V amplitude, using an AF generator. But im having a problem since my amplifier will give a distorted signal. I want to clarify if it is more than 30W since our professor requires 30+ watts. The website where i found this tda2030 bridge subwoofer said it was 35 watts. Can you help me prove this power?

[@Helectronics]

Are you shure that you've done everything correctly? Did you built it on a breadboard? Also, the grounding is very important. What kind of power supply do you use for your amplifier? Single rail or dual rail, also the voltage.

[@fretlessbass6787]

Helectronics its on a pcb sir, my power supply is a center tap transformer with 15 0 15 v.

[@Helectronics]

If it has big enough capacitors at the power supply (at least 3300uF on each rail and also ceramic capacitors for high frequency noise) than it should work. Check the connections again. I hope the circuit is not faulty.

[@suryakantsahu2496]

3w का amplifire kit है अगर 3w की जगह 10w 3इंच का स्पीकर लगा हो तो क्या प्रभाव पड़ेगा स्पीकर woofer वाला है Respones

[@Helectronics]

Please could you use English? Even with google translate I can't understand it, sorry.

[@jamesboby2206]

My Hindi isn't great, but I think he's asking if it would make a difference if he uses 10w woofers on a three watt amplifier kit.

[@Helectronics]

Thank you for the translation James! That should work, with the 10 watt woofer you would probably get a better sound, bass, but it won't be much louder. Also depends on a lot of criteria: what kind of amplifier, the woofer should be driven with a low pass filtered signal, etc. I hope I could help you, suryakant sahu.

[@techworld3498]

I have a bridged circuit how To unbridge the circuit

[@hellrider15]

You can make the two bridged ICs into two separate amplifiers (stereo) by taking out the 22K ohm resistor, which is connected between the two amplifiers and at the second amplifier, where the input is connected to signal ground you just connect another signal input instead of ground. Don't forget to hook up two speakers separately to the aplifier outputs and you are done. If this describtion is too complicated please take a look at the datasheet. Thanks for watching!

[@techworld3498]

Thank you for your information I will try

[@bhartirasoi2456]

What is c8 formula

[@Helectronics]

What do you mean by c8 formula? C8 and R8 form a filter which filter out very high frequency sounds. You can read more about this if you search for Zobel network on google.

[@bhartirasoi2456]

C8=1/2πBR1 is written in datasheet for split power supply in applications circuit I can't understand how to calculate the value. Please help me.

[@Helectronics]

@@bhartirasoi2456 That formula is for the split supply simple circuit, this video is about the bridged circuit. The formula for that, if I remember well is like B is the cut-off frequency, R1 is the value of the R1 resistor. In the datasheet of the TDA2003A there is a diagram for the value of the Cx (which has the same purpose as the C8 in the TDA2030A datasheet) and there you can find out the value which is good for your circuit. The best solution is to build the circuit on breadboard and to try with different values of C8 and with an oscilloscope check the frequency response until you get the best result.

[@bhartirasoi2456]

@@Helectronics can you suggest any value for balance sound result

[@Helectronics]

@@bhartirasoi2456 For the R5 2k ohm resistor, for C8 220pF or 0.22nF capacitor after my calculations, but this has to be tested and measured.

[@stephenpuma1211]

Nice one sir, but the circuit is how many watt

[@Helectronics]

According to the datasheet it is around 30 watts, I haven't measured it so that is why I can't give exact value, but if I will get measurements then I will return. Without load the supply gave 16 volts dual rail, with 1 amp load (according to the datasheet) the voltage will drop to 14 volts, which means the output power should be around 30 watts. Thank you for watching!

[@stephenpuma1211]

ok thank you sir, my problem is that I don't know how bridge the ic, which I don't wether you will help on how to

[@Helectronics]

In this video I demonstrate how to build the bridge amplifier, also you can find the circuit diagram for bridge amp in the datasheet linked in the description, you cvan find it on page 8, figure 16.

[@stephenpuma1211]

okay thanks

[@theflamesareup4227]

Make a Kv-1 tank plz

[@Helectronics]

I mostly work with electronics, I only do tank models in my free time which is very rare, so I can't promise I will make soon a tank model.

[@theflamesareup4227]

Helectronics I've been waiting so long ;(

[@rituparnasaikia015]

can u spik hindi

[@Helectronics]

Sorry but no.

[@VidarrKerr]

No wants to learn hindi unless they are forced to at gunpoint. Are you guys still street shitters?

[@nester.1337]

Tudjuk hogy magyar vagy

[@21thTek]

Great video , awful music : (

[@Helectronics]

Thanks, yes, in my older videos I've used non copyrighted musics, but in my latest videos I don't use music while I'm explaining.

[@VidarrKerr]

Your music ruins an otherwise really cool video.