show us dependency graphs for the : efficiency versus output power versus input voltage . . . the why is because such generators fail to start oscillating at voluntary I/O conditions and have a narrow range for efficient function
Put a tuned LC circuit before the gate to set desired frequency + add stability. And if you’re concerned about efficiency, you wouldn’t use a BJT in the first place, you’re loosing almost half the 1.5v at step 1. You can also add a careful amount of capacitance to the Top secondary to couple it back increasing stability. Infact you can add an inductor (an air core wound out of wire would suit) before the electrolytic capacitor to facilitate cold starts by allowing the output of the rectifier to hold back on drawing energy for a few time constants such that the primary and secondary can get oscillating together.
@@geekswithfeet9137 what mosfet j-Fet to use for the single AA . . . some BJT d/s claim below the 200mV CE at the 1/10-th Ib/Ic . . . must buy some discretes . . . do some testing . . .
this cct is not a Power Supply, it is a Voltmeter. You cannot use a Voltmeter to power up anything. You would need a really big transformer and capacitor to power up your house, and the cct would be inefficient, unstable and unsecure.
You just know you're watching a good quality vid when he breaks out the hot glue gun and glues everything down. If only someone would invent a lil board full of holes, that you could solder stuff to.
I've done this flying lead style construction before and you often need more than 2 hands to do the conventional method. My technique is usually to tack it up with solder on the tip of the iron, then add a droplet of liquid flux and reflow to get a nice solid and shiny joint. Quicker than using a "3rd hand" fixture.
The oscillation will be ridiculously unstable and I dread to think of the ringing that transistor is having to deal with. I'd give it an hour max before the tranny pops.
@@Guido_XL Those who know what it is, and the limitations, should let those who don't learn by tinkering and making mistakes. That's how I learned 65 years ago. What is not original to you may be the spark (pun intended) that gets someone interested.
In the beginning was the Word, and the Word was with God, and the Word was God. 2He was with God in the beginning. 3Through him all things were made; without him nothing was made that has been made. (John 1:1-3)
@@Mesa_Mike i missed the 2:31 previously - 10kΩ output "current limit" - even when we replace it with buck stage the overall efficiency at best is 73% step-up by 85% (a tuned custom step-down) ≈ 62% at the "good weather" and with the fresh battery . . . for the most of my past Joule Thief LED light experiments the first stage remained around 30% for a single "1.5V" input
There's a mistake in your circuit diagram to that of the connection made in the video. The positve from BR in the video you have soldered 10 k resistor but in the circuit diagram it's shown that the resistor is in the negative.
Tha disn't need Amps when tha's got all them Volts to plays wit'! Besides, he only wants to light up some LEDs -- how long do you really want it to last? ;-)
I think your slm videos are educational. Thank you. I have a question. I don't want to spend on my cordless drill and buy a new adapter or tarsformer. It's expensive. Can I convert my 12V, 2A adapter to 14.6V and 20A, I need your information, thanks
No No... You didn't do it properly........... (Pirates of the caribbean quote) ... You gotta say it properly "Transformer... I release you from your PCB Bonds" then you have to gently pull it out You didn't say it properly , You got to say properly :P
А на каких обмотках трансформатора какие сопротивления, чтобы понимать, что и куда подключать...??? Потому что трансформаторы все разные. Я имею ввиду из цоколевку.
@@user-el7jq9fw7v The school physics does not include all the different options of secondary windings in existence. There is a reason why every transformer manufacturer has thousands of different transformers in their catalogue.
That must have been a very special 9 volt battery to deliver the current required. Or you could be lying, of course. A 12 volt car battery can power a small TV set via an inverter because it is capable of providing the current required.
Trying to work this out. What are the ratios in the transformer? Can this be scaled by hand-winding a core? I want to simulate a POTS line. So I want a core to source 48v /and/ a 20Hz 90v PRMS.
@@k.kivenmaki8431 Thank you for your reply. There were 2 stages (i.e., outputs). It makes sense that one is 1:100. Is there a way to find out what the other stage is? Also can I use a different transistor, like a 2n2222?
What's there briliant? You've reinvented the old good known (unstable) oscilator. This was partially interesting about 40 years ago. What's next, inventing of wheel?
a joule thief..hmm.. interesting. how much current can it output ?? please in some video next tell us about it cuz I recently salvaged a transformer from an old wall adapter charger and wanted to utilize it this way
Looks like this is based on a 'joule thief' circuit. Except one with a MOSFET can pull energy from sources near to 0V, while this one stops at around 0.7V on input. The rest of it (a "diode probe" part) is just a single resistor. Useful, but meh.
I use circuits like that to power LEDs from 1.2 volt rechargeable cells. By themselves the cells don't produce enough voltage to light the LEDs. Look at the Wikipedia article called "Joule Thief".
If no AC is present then how did you think the current got through the Transformer ? Circuit analysis 101 The Battery is DC (this part no doubt you understand) THE TRANSISTOR has 2 Basic jobs Job 1 - To act as an amplifier (Forward Gain) Job 2 - To act AS A SWITCH so What happens when you switch DC on and OFF ???? You get a square wave, which is... for all intensive purposes AC Now it is possible for the AC to pass through the transformer because DC would have just created a dead short so, After passing through the transformer as AC Square Wave it is now necessary to rectify that AC to DC again MAKE SENSE ? I suggest you learn about the STAGES OF A SWITCHED MODE POWER SUPPLY and then apply this principle in this video After the initial rectification stage What will follow is the SWITCHING STAGE Try to find a diagram that shows you the stages and the waveform you would get at each stage
if you try drawing the 12 v from there would it not drain the battery 10x's faster tho? so you would have a very short supply, I dont know this for sure so if i am wrong please explain thanks
I suspect that is a very low current supply. He was only measuring voltages. If it had any decent current... it would have killed those zener diodes without a resistor.
It's shown in the video at 0:32 and again at 2:32. Perhaps you'll find a TIP31 or a BD139 more easily but you could get by with a 2N2222 if that all you have.
I find this fascinating despite knowing absolutely 2% of what might be going on here! Could some kind person please describe the "why" and "what's happening" to me please?
Hello first ac 230 ist rectified and loads an capacitor up to 310 volts dc. Then this dc is hacked with a transistorized switch to little rectangular pieces and loading a high frequency ferrit transformer. At the same time a little energy is used to switch in in and out the transistor, while the rest of the energy is used to transform this hacked dc down to 12 volts. Then a second rectifier takes only each other spike and loads a second capacitor. At the same time this rectified and stored dc controls the main switch by regulating the off/on time as duty cycle to hold the rectified 12 volts always on a level independent of the charge connected to this switch mode power supply. I hope I could it shortly explain, what happens inside this litte brick, but there are up to 310 volts inside and the black condenser stores its charge also after pulling out the brick from the mains. But in this post the transformer and a few other pieces are used to transform 1,5 volts from a battery up to 120 volts only by changing the transformers in and out coils and afterwards rectifying the hacked ac by storing it in the blue 2u2 microfarad condenser. That’s electronics, a radioamateur has to know this and can build with those components up to a transmitter or a radio, I build television transmitters. 73s
Gives a new meaning to the term "circuit board".
That is the original meaning of circuit board though... xD
@@simplyengineering2350 True!
That's where the term "Bread Board" originally came from. Building circuits on, you guessed it, pieces of bread cutting board.
As far as I'm concerned you're using magic to keep everything this steady when soldering!
Much better with the sound turned off.
It is probably a great wide spectrum jamming circuit as well.
Just Make It On 220 And Put The Wires As Dipole On 20 Level House !
show us dependency graphs for the : efficiency versus output power versus input voltage . . . the why is because such generators fail to start oscillating at voluntary I/O conditions and have a narrow range for efficient function
Ya what he said!
Put a tuned LC circuit before the gate to set desired frequency + add stability. And if you’re concerned about efficiency, you wouldn’t use a BJT in the first place, you’re loosing almost half the 1.5v at step 1.
You can also add a careful amount of capacitance to the Top secondary to couple it back increasing stability.
Infact you can add an inductor (an air core wound out of wire would suit) before the electrolytic capacitor to facilitate cold starts by allowing the output of the rectifier to hold back on drawing energy for a few time constants such that the primary and secondary can get oscillating together.
@@geekswithfeet9137 what mosfet j-Fet to use for the single AA . . . some BJT d/s claim below the 200mV CE at the 1/10-th Ib/Ic . . . must buy some discretes . . . do some testing . . .
@@TT-hi1qv what they said
What about the fact that he is holding 120 v DC with bare hands???? 😜 😜 😜 😜 😜 😜
Just think, you can scale this up and get like a million volts and power your whole house. All from one AA battery.
Or you could use 1 AA Battery to Power the Whole World if you had an Extension Lead !!!!!
@@spaceted3977 why stop there? Who needs a Dyson sphere…
this cct is not a Power Supply, it is a Voltmeter. You cannot use a Voltmeter to power up anything.
You would need a really big transformer and capacitor to power up your house, and the cct would be inefficient, unstable and unsecure.
Archimedes famously said, "Give me a 1.5v battery, and I can move a mountain".
You just know you're watching a good quality vid when he breaks out the hot glue gun and glues everything down. If only someone would invent a lil board full of holes, that you could solder stuff to.
And name that board perfboard or prototype board. That will be awesome, no more glue gun!😅
This method is straightforward
Typically Indian 🙂
Perhaps, but the method shown here has a long and glorious history. It is where we get the term "breadboarding".
This is about as low cost as you can get.
Best to use flux cored solder, heat the joint first then feed a little solder in. Avoids dry joints/dirty joints.
I've done this flying lead style construction before and you often need more than 2 hands to do the conventional method. My technique is usually to tack it up with solder on the tip of the iron, then add a droplet of liquid flux and reflow to get a nice solid and shiny joint. Quicker than using a "3rd hand" fixture.
Yeah, l was thinking the same thing.
The oscillation will be ridiculously unstable and I dread to think of the ringing that transistor is having to deal with. I'd give it an hour max before the tranny pops.
Joule thief/ relaxation oscillator. Be prepared to alter the components shown here, to make it work. Easier to use a toroid, and wind it yourself.
A Joule thief blocking oscillator indeed, that's what I thought too. Nothing original since the dawning era of electronics.
@@Guido_XL Those who know what it is, and the limitations, should let those who don't learn by tinkering and making mistakes. That's how I learned 65 years ago.
What is not original to you may be the spark (pun intended) that gets someone interested.
In the beginning was the Word, and the Word was with God, and the Word was God. 2He was with God in the beginning. 3Through him all things were made; without him nothing was made that has been made. (John 1:1-3)
I didn't understand anything. What is the reason behind of this video ??
Stepping up voltage for testing Zener diode.
Parabéns, ótimo projeto , fiz igual e funcionou perfeitamente.... 👏👏👏
Congratulations, great project, I did the same and it worked perfectly....
What controls the frequency at which this oscillates??? Seems poorly controlled this parameter.
The transformer. Why do you care about the frequency? The high voltage output is being rectified anyway.
Copper or brass tacks for solder points?
BEAUTIFUL. WONDERFUL.
I'm not an electronics expert but I did stay at a Holiday Inn Express last night!
Like Mom said, *_Use your words_* ! Way better than mild porn music.
Oooooh. Ooooooh oooooh. Hows that, better? 🤤
Excelente circuito para la aplicación.
FELICIDADES. 👍😉
Why are you hiding output wires of your "Billiant Idea" and probe wires?
Feery good 👍👍👍
if you build it and it doesn't work you probably got the primary and auxiliary of the transformer the wrong way round
buck type converter,i would'nt hold the 120 volt leads in opposite hands though
More boost than buck.
@@MirlitronOne shut up dickhead,you dont know WTF you are on about
Every home, I agree.
What are the transformer spec.-s as inductances + core /-material saturation flux , frequency limit . . .
It's a transformer from a typical cell phone charger... Generally operated at around 15 kHz from what I understand...
@@Mesa_Mike i missed the 2:31 previously - 10kΩ output "current limit" - even when we replace it with buck stage the overall efficiency at best is 73% step-up by 85% (a tuned custom step-down) ≈ 62% at the "good weather" and with the fresh battery . . . for the most of my past Joule Thief LED light experiments the first stage remained around 30% for a single "1.5V" input
Супер. Спасибо 🤝 очень нужная вещь. Искал схему попроще и вот она👍
Начало и конец обмоток указал бы ещё... 😊👍
great project,
There's a mistake in your circuit diagram to that of the connection made in the video. The positve from BR in the video you have soldered 10 k resistor but in the circuit diagram it's shown that the resistor is in the negative.
Nice but how about amps?
Tha disn't need Amps when tha's got all them Volts to plays wit'!
Besides, he only wants to light up some LEDs -- how long do you really want it to last? ;-)
Dry joint heaven!
Even before watching this video, I knew it will be a terrible, dodgy design.
The transformer must be a neat radio jammer😄
like every switching powersupply we use these days?
I’m surprised he can hold it in his hands. The current must be a lot lower than what that 10 k resistor limits it to…
Fantastic video, can I use another supply voltage higher than 1.5v? Which is the limit? Thanks.
Omg... Just buy the damn thing at harbor freight... Is 9.99 for a power supply circuit tester.
Maybe he's in india, no habor freight, no electronics stores
Wipe the slobbering iron tip before each use. You’ll have a much easier time transferring heat!
Quite the opposite.
Can I use BD 139 or D882 transistor instead?
Fantástico 👏👏👏
Do have any circuits for a free energy machine ?
Now try putting a load bigger than the 10 megohm of the meter.
I think your slm videos are educational. Thank you. I have a question. I don't want to spend on my cordless drill and buy a new adapter or tarsformer. It's expensive. Can I convert my 12V, 2A adapter to 14.6V and 20A, I need your information, thanks
Total power can't be exceeded 12 x 2 = 24 watt.
In simply it's not possible 😔
Really amazing video bro ❤️👍
bom dia. Pretendo testar esse circuito mas tenho uma dúvida: Qual é a corrente que ele fornece à carga? Grato e forte abraço do Brasil.
what is the final construct used for ? testing resistors? a resistance testing machine?
Zenner Diode Testing
Testing LEDs with the 1.5 volt cell.
it is..... it's legit a boost convertor. but a shitty one that has all most no regulation..
Good idea using joul thief circuit.i like it.
I am pulling on transformer but it won't come away from the PCB. Think I will try bench vice and vice gripe. 🤣😂
😄
😆😆
😝🤣
I took the circuit board to my dentist. He managed, but charged me $120.
No No... You didn't do it properly........... (Pirates of the caribbean quote) ...
You gotta say it properly
"Transformer... I release you from your PCB Bonds"
then you have to gently pull it out
You didn't say it properly , You got to say properly :P
А на каких обмотках трансформатора какие сопротивления, чтобы понимать, что и куда подключать...??? Потому что трансформаторы все разные. Я имею ввиду из цоколевку.
тебе сначала школьный курс физики надо закончить, судя по твоему ответу.
@@user-el7jq9fw7v The school physics does not include all the different options of secondary windings in existence. There is a reason why every transformer manufacturer has thousands of different transformers in their catalogue.
@@user-el7jq9fw7v а тебе русский язык подучить: "судя по твоему ответу", может всё-таки вопросу, а не ответу?
So on your patent would you omit the title too? Or just used the title in this video.?
What is the value of transformer
muy bien ,, en el diagrama pusiste la resistencia de 10k que va de lado negativo y en el video esta de lado positivo ,, saludos
Ops!!!
The *Tech Ideas* should be review this.
In the diagram the 10 k resistor is on D1 pin 4 -> 2:31.
Why is there a three digit seven segment LED display that isn't connected to anything in the thumbnail?
Output maximum A how much
رائع
Aap Jo star dikha rahe hain 3.7 volt battery se nahin ho sakta hai
once I made a similar device. but with a 9v battery. increase the voltage to 220v. and I could power the tv. and other home appliances.
With the DC voltage ? Or with high freq. unstable distorded waveform?
That must have been a very special 9 volt battery to deliver the current required. Or you could be lying, of course. A 12 volt car battery can power a small TV set via an inverter because it is capable of providing the current required.
We can use it for chek the zener voltage
Probably the only thing it's good for.
@@kawkvulcan500 Solar powered LED lights make use of a very similar circuit.
Wrong schematic or diagram. the 10K position is in the negative, in the tutorial it is in the positive position. Sorry..!!!
Trying to work this out. What are the ratios in the transformer? Can this be scaled by hand-winding a core? I want to simulate a POTS line. So I want a core to source 48v /and/ a 20Hz 90v PRMS.
If the output voltage is about 150V (considering the voltage drops), then the transformer ratio would be 1:100 since 1.5V * 100 is the output voltage.
and yes you can scale it by hand-winding it
@@k.kivenmaki8431 Thank you for your reply. There were 2 stages (i.e., outputs). It makes sense that one is 1:100. Is there a way to find out what the other stage is?
Also can I use a different transistor, like a 2n2222?
Is the oscillation generated by L-R-Q? Wow, didn't know oscillation was possible without a cap. Is this a resonant converter?
Sperrschwinger
What's there briliant? You've reinvented the old good known (unstable) oscilator. This was partially interesting about 40 years ago. What's next, inventing of wheel?
a joule thief..hmm.. interesting.
how much current can it output ??
please in some video next tell us about it cuz I recently salvaged a transformer from an old wall adapter charger and wanted to utilize it this way
Muito bom gostei testador diodo legal👊👊🙋
Looks like this is based on a 'joule thief' circuit. Except one with a MOSFET can pull energy from sources near to 0V, while this one stops at around 0.7V on input. The rest of it (a "diode probe" part) is just a single resistor. Useful, but meh.
A MOSFET is also less susceptible to being damaged by high voltage spikes from the transformer.
What is it for?
I use circuits like that to power LEDs from 1.2 volt rechargeable cells. By themselves the cells don't produce enough voltage to light the LEDs. Look at the Wikipedia article called "Joule Thief".
What was that?
يتعذر التعليق لا أعلم .
Very good 👍
What does the FBR do here, because no AC is present.
The transistor and transformer primary form an AC oscillator which is stepped up at the transformer secondary.
If no AC is present then how did you think the current got through the Transformer ?
Circuit analysis 101
The Battery is DC (this part no doubt you understand)
THE TRANSISTOR has 2 Basic jobs
Job 1 - To act as an amplifier (Forward Gain)
Job 2 - To act AS A SWITCH
so What happens when you switch DC on and OFF ????
You get a square wave, which is... for all intensive purposes AC
Now it is possible for the AC to pass through the transformer because DC would have just created a dead short
so, After passing through the transformer as AC Square Wave it is now necessary to rectify that AC to DC again
MAKE SENSE ?
I suggest you learn about the STAGES OF A SWITCHED MODE POWER SUPPLY
and then apply this principle in this video After the initial rectification stage
What will follow is the SWITCHING STAGE
Try to find a diagram that shows you the stages and the waveform you would get at each stage
if you try drawing the 12 v from there would it not drain the battery 10x's faster tho? so you would have a very short supply, I dont know this for sure so if i am wrong please explain thanks
I suspect that is a very low current supply. He was only measuring voltages. If it had any decent current... it would have killed those zener diodes without a resistor.
@@kawkvulcan500 It wasn't without resistor. He used a 10k resistor on the output.
Question that benefits lithium battery instead of acid battery 🔋
For a given capacity lithium batteries are much lighter than lead-acid batteries.
Tooooop
So what's it for then, solving the energy crisis ?
For testing. He demoed at the end
👍👍👍
Sir ji iss circuit ka kya kaam h
Wow! Great ,👍👍
Good work
Thanks for sharing
Amazing circuit..
will try....
👍👍🎈🎈😁😀
The best part starts from 3:00 hrs
👌👍
muhteşem
Thanks for most valuable knowlede for me and all, Sirji. Kya ye circuit 3.7V par run kar sakate hai kya.🙏🙏
Yes, ofcourse
Thanks Sirji🙏🙏
Master
What type of transformer is this
This is NPN transistor
No. I mean what transformer example, 12-0-12 transformer
And this is not transistor is scr device
This is HF(high frequency)Transformer mostly used in DC section of electronic ckts
Typical cell phone charger transformer.
@@ChetanKhadse-gb7fq No, the 2SD882 is not a thyristor, it's an NPN transistor. You can use a BD139 or a TIP31 instead.
Good job👍
simplesmente...fantástico
👍
Amazing sir....
how many dry joints ? LEARN to solder first
Transistor part number, pls ?
any NPN transistor
It's shown in the video at 0:32 and again at 2:32. Perhaps you'll find a TIP31 or a BD139 more easily but you could get by with a 2N2222 if that all you have.
@2:31
Otimo
Good job
Vry nice 👍
I find this fascinating despite knowing absolutely 2% of what might be going on here! Could some kind person please describe the "why" and "what's happening" to me please?
Hello first ac 230 ist rectified and loads an capacitor up to 310 volts dc. Then this dc is hacked with a transistorized switch to little rectangular pieces and loading a high frequency ferrit transformer. At the same time a little energy is used to switch in in and out the transistor, while the rest of the energy is used to transform this hacked dc down to 12 volts. Then a second rectifier takes only each other spike and loads a second capacitor. At the same time this rectified and stored dc controls the main switch by regulating the off/on time as duty cycle to hold the rectified 12 volts always on a level independent of the charge connected to this switch mode power supply.
I hope I could it shortly explain, what happens inside this litte brick, but there are up to 310 volts inside and the black condenser stores its charge also after pulling out the brick from the mains.
But in this post the transformer and a few other pieces are used to transform 1,5 volts from a battery up to 120 volts only by changing the transformers in and out coils and afterwards rectifying the hacked ac by storing it in the blue 2u2 microfarad condenser. That’s electronics, a radioamateur has to know this and can build with those components up to a transmitter or a radio, I build television transmitters. 73s
Look up "Joule Thief" - there's videos that explain this type of circuit rather than just showing it looking pretty.
Neither any circuit diagram,explanation nor any component value.
Diagram given in the video
Boa noite parabens pelo seu trabalho
Amazing
не рабает!