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May ginawa ako video jan boss, naka 2.1 amplifier na, Kaso gumamit pako ng DC-DC isolator don para walang noise, pero pwede naman tanggalin Yun, check mo lang latest video boss, may Schematic don

@@x3dtronicsph link boss yung stereo to mono naba yan boss

What do you mean??? The Fan will start automatically when the discharge starts???

@@x3dtronicsph yes in resistance. can you make a video how to put mini fan to resistance.

Well, you can make another comparator circuit just like the current Load, but the output of the opamp will turn a transistor on, you can connect the fan to that transistor

@@x3dtronicsph where can i find the transistor? and how to connect. make a video bro. many people want to learn, just like me as beginner 😅

Poor Grounding yan paps, mas maganda naka lutang yong Board mo, gamin ka Standoff, may maganda plastic, Igsian mo lang mga wire, wag yong buhol buhol paps. Tsaka gamit ka Shielded Cable sa mga Input audio

You can add a Potentiometer on it's input though, just remove the 1k resistor in the input side of the amplifier if you have a weak audio signal source

@@x3dtronicsph Cool! Thanks man!

Yes bro, 7 watts RMS per channel only

Hello, can you translate it in English for me

Good morning, I bought 2 pieces and I can't calibrate any of them, I press the 3 buttons and supply 5V and 0v0a only 0000 does not appear, please help me. thank you 🤝

Does both of them inaccurate for you to calibrate it?? If not, don't mind calibrating bro, but if its a ZB2L3 model, it should be calibrated, check the push buttons as well if they make contacts

The buttons were the first thing I checked and they are fine, well I already bought 2 more, so I hope they are not bad too 😀

thanks for responding greetings

In calculation, sakto yan boss, kaso may Losses kase yan sa mga Wires at connection. Bale dadagdag ka ng Butal don sa 15volts, Dapat talaga padaanin mo sa Accurate na AmpMeter. Tsaka mabilisan dapat o dapat mataas wattage ng resistor, Dahil 30watts yong power non pag 15volts 2 amps,

Sakaling mag kamali po Aku okay lng poba I calibrate Yun uli?

Bali mag a add nlng po Pala Aku sa voltage

@ziankyledemaraye3797 oo boss, pwede sya icalibrate ng paulit ulit , pero dapat tama yong mga values para magamit mo, baka kase masira mo pa, Try at your own risk nalang

@@x3dtronicsph cge², maraming salamat po

It will depend on the Speaker load impedance though, but for me, the average number of 3.7v in series will be about 4. You can also go with 5 in series if you want

Oo boss, maganda lang i calibrate yan kapag masyado na malayo ang Reading, pero kung ayos naman ang Reading, kahit wag mo na gawin, Yong dalawang puti na kasama, Load resistor yon, ikabit mo sa R terminal

Thank you brother

What's up bro

You can try , but add around 1k resistor on it's gate probably, Because if other MOSFET go shorted, it can protect other MOSFET, cascading MOSFETS is possible with Dummy loads, but if you're gonna use separate batteries every MOSFEt, i guess it's a bit complicated

@@x3dtronicsph Thank you for advise, I googled it recently and found that my idea is not good. People always suggest to use 1 IC : 1 Mosfet. For now, I plan to only share the potentiometer and the rest components will be separated. I have another question. I need to increase maximum discharge current. Apart from parallel multiple Z2BL3, can I modify the Z2BL3 directly like change IC or Mosfet? Thank you again here :)

Sadly, the ZB2L3 is programmed with only Max 3 Amps of current, thats Why i only designed it with 2.5amps max only, evem you change the ZB2l3 mosfet, the current reading is based on its Shunt Resistor, so I guess you need another version of Discharger if you want higher current

​@@x3dtronicsph Hi, is the current fixed to specific value and independent to the voltage of 18650? Like I set 1A at 4.2V at the begining of test. Is the current will drop when the voltage is approaching to 2.75V which is consider as 0%? I have the discharge device which can maintain current until the end. I hope that solution in the video can achieve the need. Another question, I could not find 47k Resistor. What is the purpose of the resistor? Can I remove it? Thank you sooo much

The current is Constant bro at any voltage (minimum of 2.5v) , the purpose of the 47k resistor is to create a voltage divider with the 50k potentiometer to have a limit of 2.5A of current, (2.5volts reference for the opamp since the supply is 5volts) . The module can only handle up to 3Amps of current. If you don't have that 47k resistor, you can use any Value, but the potentiometer value should be close with that resistor value. Example, 10k resistor with a 10k potentiometer

Yes, i already bought a 32pin IC, will check the comparison of these 2 ICs

Can you make a video about it?

Already bought one bro, working on it

You can lower the value of input potentiometer, you can also lower the value of feedback resistors to decrease gain, and lastly, you can add another potentiometer on it's output

​@@x3dtronicsph Tried with pot for volume in both input and output. It lowers volume but it sounds like it's clipping. Experimented different values for feedback resistor, it sounds better now but lesser punch.😂 Thank you.

Yes of course, just make sure it's a working Op-amp, Lot of Fakes nowadays

Thanks

​​@@x3dtronicsphumm, I have made the module, but why mine does not work, I have used Lm358P, when this module is connected to zhiyu, zhiyu read it 0.10 which is usually 0.06 and in the video you said that the mosfet will be hot, but what I have is not at all, can you help me? I try to use a separate power supply and the results remained the same When i test the battery and turn the potensiometer The current read unchanged remains 0.00

Probably it's another model, calibration only works with the ZB2L3 model bro

With 4ohms load, Too Hot for the IC bro. 8ohms load probably, but not recommended with 4ohms for me because of heat issue. You can try at your own risk

What do you mean dual Lm4440

​@@x3dtronicsphthey are very popular

If you're talking about LA4440 IC, when in stereo mode, TPA3110 is way stronger. But if the LA4440 is in Bridge mode, LA4440 is powerful, Only Downside is the Efficiency,

​@@x3dtronicsphhow can I chat with you privately do you have insta

​@@x3dtronicsph i am using 4440 ic board for 2 Kenwood bookshelf speakers it goes pretty loud. I want a better alternative though it should be able to run at 12v

Bro, Tpa3118 can only go 25watts max RMS watts at 24volts 4ohms load. In other hand, TDA2030A is around 15watts RMS if it is single, But TDA2030a in Bridge mode is more powerful than the Tpa3118 ofcourse.

When it comes to sound quality, TDA2030a is Class AB, which is Why it sounds better than the Class D tpa3118, my guess here is the Gain of the Tpa3118 ic, OR the input capacitor of the Tpa3118 acts as a High Pass Filter , that's why it sounds bad. I have designed a filter for my tpa3118 and it sounds very good. I'll probably upload in future weeks after editing

@@x3dtronicsph Alright tyvm, please do so as it'll be very helpful

Bro, i think they're just the same, for me, I would go with the 15watts per channel since it's the closest to the actual true rating, 30watts is too much of marketing

@@x3dtronicsph thanks. I have one more doubt can I solder aux in directly to Power amplifier?

Yes, input impedance of the Tpa3110 Module is around 1kilohms, but tpa3110 modules have a lot of issue though, just don't use to high voltage and avoid load it with low Impedance Speakers

Yes, it will work nicely at 17 volts

Pwede boss, pero kabit ka padin ng Ampmeter sa resistor, para sakto , may Tolerance kase yan resistor boss, akin 8.4volts nga ginamit ko sa 4ohms kase may mga Losses pa sa Wire na ginamit

@@x3dtronicsph maraming salamat po idol sa reply,

Yes it's true. The actual main reason i made this addition was, to have an easy selection of current when using different kind of battery Voltage ang Battery type. It's pretty annoying to change the resistor value every time, also having a CC discharge improves the discharge speed because, Batteries decrease voltage over time and decrease current as well. Relying in a Steady resistance for different discharge setting will be way better if you have an adjustment knob for it, thank you

@@x3dtronicsph yea, that makes since. Do you know the max current the device can measure? What's the current sense resistor and max adc voltage?

Max current is only 3amps, i didn't measure the voltage drop across the Current sensing resistor at 3 amps, but for me. 3 amps is pretty decent. For low power batteries only.

@@x3dtronicsph When calibrating the 1A current, measure the voltage across R020, calc the resistance. Half the resistance, now you have 6A (changing the fet too), or anything higher current.

WC bro

It's 8 ohms, but you can use 4ohms at 12volts

My best speaker recommendation is 4ohms 20watts, any size. If you use 16ohms speaker, you can use 24vdc supply. But using 16ohms speaker, you'll not maximize the power of Tpa3110 . Better use 4ohms

@@x3dtronicsph sir speaker phle se hi isliye puch lia Sony brand ka to speaker p invest nhi karna chah rha m

Thanks bro🤝

It's an IC problem bro, buy a new one

Di naman sya kumakain ng mas mataas sa 2Amps boss sa 24volts pag 4ohms load, malakas talaga boss. Pero kaya dahil nababase mo ang lakas sa mga 502, ay dahil hindi naman po RMS power ang 500 watts ng 502. Tansa ko less than 100watts rms lang ang 502 boss. Natry ko din ng may preamp boss, 25watts RMS max na inabot ng tpa3118 na 28pins. Bibili pa ako ng 32 pin para i kumpara ko

@@x3dtronicsph nka mono kalang sir try mo dublihin para stereo. At iba ang palo nya kung nka 24 ka sir at my mixer malakas sya

Initially bro, the -Load and Ground should be isolated, When you press something and the discharge starts, the MOSFET of the ZB2l3 will automatically connect the -Load and Ground. If you directly connect -Load and GND, you will get an Error5 because. Everytime you put a battery, it will automatically discharge because you bypass the Mosfet of the zb2l3, that's why i isolated it

@@x3dtronicsph Thank you. When I compared the ZB2L3 you are using with mine, it looked a little different. I bought it recently. There is a description of HW-586 V3.0. It seems to be working fine now, so I'll try it some more.

Pag RMS watts. Hindi po, sobrang layo sa 30watts

You need to recalibrate it again. You probably did some error in the current calibration

@@x3dtronicsph I tried many times but the result is the same

Use your braina little bit , there is nothing wrong with the language.

Thank you brother

I have correct myself, one can better use the IRLZ44N MOSFET because the SMP 60N06 is not really suitable for this application. I've tried the STP40NE03L-20 and this has better results, but it gets quite hot.

so hindi po ata lahat ng v2.3s ay not accurate ang reading..

Oo boss. Yong akin kase anglala talaga. Ngayon maayos na, sobrang sakto pati current reading, nalagyan ko na din ng constant current setting

It's LM358p bro. You can also use Lm393 or other comparator Op-Amps

I can't find Gold Version here in PH. I'll probably have a review on pam8610

@@x3dtronicsph 😊

If the capacity decreased as you tested, it's normal for the battery to lose its capacity each charge/discharge cycle

I tested the battery a second and third time right after fully charging the battery after each test. The 3 tests were done in just a short time, and the battery was not put to use.. 1st test - 739mAh; 2nd test - 583mAh; 3rd test - 641 mAh

@ikordilyera that's odd. LoL. Check your battery connection bro. It seems like you have a bad connection. Huge Voltage drop in your connection making the test inaccurate

Yes it is. For normal lithium battery voltage, it is normal. But with 12volts , I don't think those resistors can survive

Thanks!

TDA2030 is obsolete sir. I'm still finding original ones, the one with Thick Legs. Tda2030 in the market now are just Imitation. I'll make a video comparison of the original and the imitation version of the IC in the future

@@x3dtronicsph tnq u sir 💙

Appreciate that bro. I'm happy with Loyal Subscribers thou, they're enough😊