- Видео 30
- Просмотров 61 662
DAK Electronics Lab
Индия
Добавлен 18 июл 2023
Hobby Electronics,Amplifiers,Transistor circuits
||How to Repair AC Inverter Welding Machine.
Helo friends, in this video I am showing you how can we repair an inverter welding machine, and also I have explained the working functions of an inverter welding machine. "Subscribe and support to my channel".
An inverter welding machine is a power source that converts AC power to DC power, which is then inverted back to a high-frequency AC output.
#inverter
#highfrequency
#ferrite
#igbt
#weldingmachines
An inverter welding machine is a power source that converts AC power to DC power, which is then inverted back to a high-frequency AC output.
#inverter
#highfrequency
#ferrite
#igbt
#weldingmachines
Просмотров: 972
Видео
Convert Your old Music System into Bluetooth mode.
Просмотров 1,6 тыс.2 месяца назад
Helo friends, in this video I am showing you how can we add a bluetooth module to our old music system, which doesn't have bluetooth connectivity. #blutooth #hifi #soundbar #audiosystem
Automatic Temperature Controlled Cooling Fan Circuit || Automatic Cooling Fan for Amplifier.
Просмотров 3,2 тыс.3 месяца назад
Helo friends, welcome to my channel. This video is related to a temperature controlled cooling fan circuit, which can be used in audio amplifier systems. The fan is rotate according to the temperature of the sensor increases or decreases. Here I used a thermister as a temperature sensor. For more videos "subscribe to my channel" #Dak electronics #temperaturesensor #coolingfan #thermistor #trans...
Transistor Tester Circuit # Jules thief Transistor Tester Circuit.
Просмотров 1,1 тыс.3 месяца назад
#Transistor Tester Circuit #Jules thief circuit Circuit diagram; drive.google.com/file/d/1cRlSmqHZrOAeSbIV12uQnw3o-BIh1zvL/view?usp=drive_link
How to repair SMPS Power supply step by step || Mosfet based Switch Mode Power Supply repair.
Просмотров 4,2 тыс.4 месяца назад
#How to repair SMPS Power supply step by step #Mosfet based Switch Mode Power Supply repair #Switch Mode Power Supply Repair. #SMPS
SMPS Power Supply No Output || Switch Mod Power Supply repair || AP8022 IC SMPS Power Supply.
Просмотров 15 тыс.5 месяцев назад
#SMPS Power Supply No Output #Switch Mod Power Supply repair #AP8022 IC SMPS Power Supply.
How to repair SMPS Power Supply || Switch Mode Power Supply repair
Просмотров 6 тыс.5 месяцев назад
#How to repair SMPS Power Supply #Switch Mode Power Supply repair #smps
Automatic ON/OFF Night Light #LDR Circuit.
Просмотров 1,8 тыс.5 месяцев назад
#Automatic ON/OFF Night Light #LDR Circuit #Automatic light #LDR #npn transistor #pnp transistor NPN Transistor - 3 Resistors - 56 ohm-1 650k ohm-1 LDR-1(light sensor) Battery- 4v circuit diagram; drive.google.com/file/d/1 HPF1bUQvP0Xd3nqVSB6TPmq2G5kRzZ/view?usp=drive_link
Joule Thief Inverter Circuit
Просмотров 2,9 тыс.5 месяцев назад
Joule Thief Inverter Circuit #D880 Power Transistor #ferrite transformer #fly back circuit #jules thief circuit Circuit diagram ; drive.google.com/file/d/1R9XevOVvJGb_geuTemYo6nm0Fm4soYqo/view?usp=drive_link
TDA7377 2.1 POWER AMPLIFIRE CIRCUIT.
Просмотров 1,2 тыс.6 месяцев назад
#TDA7377 IC circuit #2.1 power amplifier circuit Circuit Diagram; drive.google.com/file/d/14FLsmrC8rE8fFeOhZveR50b7cDfJE8Tw/view?usp=sharing
AC Thermostat Brightness Issue Solved #AC #thermostat #LED #smd #temperature
Просмотров 1366 месяцев назад
#AC #thermostat #LED #smd #temperature
Automatic ON/OFF Outdoor Light Circuit with transistor.
Просмотров 1,5 тыс.7 месяцев назад
Helo friends, this video is related to a lightning circuit, which will turn on during night and will turn off day automatically. The main sensor of this circuit is a photo diod. #photodiode #automatic #tl431 #lightsensor #automation #lighting #relay Circuit diagram; drive.google.com/drive/folders/1mDpj5yLQGO7wkgJPaskZsf_Ip67Ot8dO?usp=sharing
How to repair a smart watch wireless charger ? #charger # wireless charging #smart watch
Просмотров 6138 месяцев назад
How to repair a smart watch wireless charger ? #charger # wireless charging #smart watch
TIP41C,TIP42C SINGLE ENDED TRANSISTOR AMPLIFIRE #TRANSISTORS #CIRCUITS #SPEAKERS
Просмотров 9 тыс.9 месяцев назад
TIP41C,TIP42C SINGLE ENDED TRANSISTOR AMPLIFIRE #TRANSISTORS #CIRCUITS #SPEAKERS
Convert a 24 volts SMPS power supply in to a 14 volts power supply
Просмотров 32610 месяцев назад
Convert a 24 volts SMPS power supply in to a 14 volts power supply
TDA7377 IC STEREO POWER AMPLIFIER CIRCUIT.
Просмотров 4,4 тыс.10 месяцев назад
TDA7377 IC STEREO POWER AMPLIFIER CIRCUIT.
PUSH BUTTON ON/ OFF SWITCH WITH TRANSISTORS #PUSH BUTTON #TRANSISTORS
Просмотров 1,1 тыс.Год назад
PUSH BUTTON ON/ OFF SWITCH WITH TRANSISTORS #PUSH BUTTON #TRANSISTORS
How to check power mosfet by using multimeter
Просмотров 54Год назад
How to check power mosfet by using multimeter
24-0-24 doual supply transformer for audio amplifiers
Просмотров 138Год назад
24-0-24 doual supply transformer for audio amplifiers
No sound backgroud
OK 👍
I suggest you that if you want more subscribers to your channel, you should more effort into it and you should get more income from RUclips! More details of what you are doing; specs, diagrams, what parts need to be prepared for projects ...etc. step by step, so many of hobby people follow you.....
Thanks for the tip
NO BACKGROUND MUSIC PLEASE!!! it drives everybody crazy... no need music for it.
NO BACKGROUND MUSIC PLEASE!!!!!!
Congratulations for showing how hard work the profession of an electronics technician is, a true technician, one of those who look for the defect piece by piece, and not a simple PCB changer. Suggestion for after the problem is solved: Apply isopropyl alcohol with a brush to the points where soldering was necessary, the marks left by the soldering iron disappear. You have gained another subscriber and a like, from those who really appreciate a job well done!
Thank you sir.🙏
Nice
Very good your vídeos. Congratulations!!!!
Thank you
عمل ممتاز ولكن اللاصق الشمعي ضعيف
Sorry, I don't understand
@@DAKElectronicsLab great work my brother , but silicon is weak to assemble the cover 7:10
It's not silicone, however it is hot glue. Nevertheless fevibond is the best.
Pl always use series lamp to check the supply to avoid any accident due to any short circuit in the supply.
That's a good suggestion, thank you for the comment
Awful AI narration is crap. 🙊👳🏿♂💩
Clear
👍
Nice tutorial
Thank you
Erm, isn’t testing that stuff like that on the hot side like, deadly?!? Your fingers were touching the metal, across components etc. i was waiting for the explosion!?
You AI video sucked
Nice
Thanks
شكرا 🌹
Welcome
So nine shar
We have to take your word for if there was a fault or if it was not there after you replaced the ic since you never showed or told us how to determine of a short or not. You just skim over showing and telling what you are doing too much.
The driver chip shorted, overcurrenting the fuse to failure. The capacitor being the most probable initial cause to to spikes caused by increased ripple, secondary to increasing ESR in the capacitor, lowering its efficiency and eventually, capacitive value. The ESR of the capacitor will tell the tale earliest, before complete failure or the value drifting substantially, as most cases of elevated ESR originate from the crimps that are behind the rubber seals in the electrolytic capacitor's base allowing the crimp connectors to oxidize, while electrolyte slowly evaporates, increasing the resistance in series with the capacitor.
Very good video. It's short and direct to the point without discussing the boring theories. Thank you!
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Without those boring theories, you'd never be able to fix some SMPS units that I've repaired. Such as the primary filter cap failing, dragging the primary drive out of spec, killing some probably dodgy secondary filter caps to their demise and shorting a feedback zener and that, killing the feedback optocoupler. Once, where the zener entirely failed to faithfully short, but broke down under voltage and only detectable easily with a curve tracer. That last, generating some profanity, as my curve tracer wasn't immediately available... The boring theory part, due to the main filter on the primary gaining increasing ESR, ripple increased, causing output currents to climb, which subsequently lead to zener failure and supply runaway. Would also see in some supplies the secondary capacitors turned into popcorn, went straight into the feedback circuit, found the faults and fixed them, then went back to see if primary cap, driver or any additional secondary caps had been damaged.
Very good education bro
👍
Thank you
Feedback: In video's thumbnail, and at 4m50s, PNP transistor is drawn upside down. Emitter (connection with arrow) should be at the Vcc side, not the GND side. R3 could be a bit larger ... presently 1k will dissipate ~150mW of energy ... a bit wasteful when there is no need for such a low value. Otherwise, schematic looks sound. 😊
Your correct, that was my mistake I didn't notice that during the making of the circuit.thank you for your advice.
You are testing without explaining what you are seeing in the multimeter. When you test a mofset what are you looking to see?
I will try to explain it in my next video. thank you for your comment.
Circuit diagram plse
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🙏
Thanks for the knowledge and the fix
🙏 You're welcome.
Great teacher (watching frm SOUTH AFRICA 🎉)
👍
Thank you
Excellent presentation
Thank you
Thanks for the knowledge sir and the English voice over so we all could understand and follow
Thank you for your support and appreciation.
@@DAKElectronicsLab please just do more SMPS repair videos.
Good one😊
Thank you 😊
Very good
Thank you
Udaya🔌🔌🔌🔌🔌🔌🔌🔌🔌🔌🔌🔌🔌🔌🔌🔌
Yes,we can use touch plate.but in order to do that we have to add additional transistors.
Good
Thank you
Very good circuit and use of mosfet also avoided. Can I use touch plate instead of switch. By using touch plate switch may also be removed. What are the changes to use touch plate. Anil Kumar Goel
So good! I must pay attention to you.
Thank you 🙏
Nice sir job♻️❤❤👍
Thank you
Nice 👍 it
Ckt diagram send me..
i would use tda 7294 is more powerfull for 2.1
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Cómo no es viral?
I don't know why 😐
Which one is better amplifier. this one or class d amplifier?
Compare to audio quality class D is the best
Thank you
Hi bro my Samsung soundbar Q990C is not working just 1 orange Light is on. I m going to samsung service centers butt he is noy resolving this problem i m just 2 months ago buy the Samsung Q990C soundbar. Pls help me Thanks
may be your soundbar in safety mode,due to any circuit failure.
❤
Nice❤
*promo sm* 💯
ഇത് എൻ്റെ charger
can you show us how to make a 2.1 channel amp using this ic? thank you
Ok, I can make it
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