Hi this is so helpful your so smart can I request the all formula and solving of this im a newbie. I currently studying electrician can you help me to improve my skill in winding thank you😂😂😇
You'll first need to know how many cm/mm makes 1 complete turn. Some multiply height by width of 1 side (distance between inner and outer diameter). While others just use an measuring tape to get the exact length per turn. Then we use the constant value of 42 to convert volts per turn. Once we know how many turns per volt we multiply it by how many volts is intended for the winding. This tells us how many turns in total is needed. Finally we then need to convert the total number of turns into metres or feet since we need to wind up the shuttle we're going to use to do the windings. Also would need to know this as we may need to order the magnet wire for the job. Of course we need to know the gauge to gives us the amps too. We can find this out by looking up on an SWG or AWG table. Going back to the windings we need to work out 1 turn around the shuttle itself so we can do the same sort of Maths at the beginning. Once we need how many cm/mm is required per turn we then divide the total length required for the actual winding. So if the shuttle is 25cm and we need 35 metres we do 3000 / 25 = 120 turns. Add an little extra for error like a few metres or so. From here we know the exact length of wire we're about to wind on the core; so there is no need to really count the turns as we wind the core. But besides that, more importantly we have the right amount of wire needed for the winding. It be very bad thing to attach another wire to what's been winding as it needs to be consistent (Unless we want to tap it to have another voltage output/input).
You should study the tx there very well and distinguish the window and crossectional area then know the power rating of the tx wrt it.then you could comment what a big mistake they all had done here is without mentioning it how they could determine the dimension of a core?
This is so wrong! The rule of thumb TPV= 42/Ac (Ac = core cross section) is BS. The magnetic equation is B = (Vp x E+8)/ 4.44 X Np X Ac X f where B is the maximum usable core flux density in gauss, Vp is the primary high line voltage, Ac is the core cross section area cm sq, and f is the power line frequency. The figure 4.44 is a factor for sine wave excitation. B can range from 12,000 gauss for thick laminations (24 ga) to 17,500 gauss for thin (29ga) laminations. Tape wound toroids are made of even higher quality silicon steel with B max up to 17,800 gauss. Compare calculated numbers using this formula to the rule of thumb. I designed power transformers for 15yrs!
I had a short in the primary winding, the first few 3 or 4 turns it had connected to the iron core, there is no isolation in the middle. Why did this happen and can i cut of this small part of the wire if the bulb doesn't light up ? No short circuit anywwere else. Can i use the original wire for the secondary winding? Mine has much more secondary windings and thicker wire. :(
Thicker wire=higher current capacity, but everything depends on tor. core flux density. That is THE key to any transformer design. it is all about the magnetic field density the transformer supports.
where do you have that 42 in the first formula ? An how do you calculate wire thickness based on the maximum current you want to have on the secondary ? Thanks
Is it true that primary winding thickness decide watts the larger the wire the higher watts, and secondary winding thickness decide amps the larger the wire the higher the amps?
Hi, I need your help I have the toroidal core at OD=20cm, ID=7.5cm, H=9.6cm (weight= 19kg) so which size of wire can use for input and output to get 8000VA (input=220V, output: 144v-96v-48v-0-48v-96v-144v). Thanks I'm waiting for your reply.
Suppose we need to start the calculation to the size of core and we want to design a transformer that function to what we expect? What ti start in calculating?
The live and neutral are interchangeable. The earth would be connected to a shield made of a sheet of copper between the primary and secondary winding's. If your making an audio transformer do not use this as a ground source for the secondary side. Create a virtual ground. A shield is used to reduce hum, if you use this as a ground for the secondary it will not work, it will in fact make it worse.
Back in the day I ran a department for toroid coils with a winding machine’s. I also worked in lamination and finish and repair. At one time we made transformers for IBM.
I had a short in the primary winding, the first few 3 or 4 turns it had connected to the iron core, there is no isolation in the middle. Why did this happen and can i cut of this small part of the wire if the bulb doesn't light up ? So short circuit anywwere else. Can i use the original wire for the secondary winding?
@@Xantylon74 It should have been insulated with tape or mylar paper. You can solder the wires back together but it would need insulation underneath the wires and it has to keep the right number of turns of wires. Be careful they can curl your hair!
@@memaw5boys1girl14 Thank you! So even 2 Turns less from the primary winding would make a difference? It would increase the voltage of he secondary winding, but just a little, right? I'm going to solder it and use a heat shrink tubing or Tape. The winding can also be insulatet with normal electrical tape?
Selecting the gauge depends upon how much amperage your require. If you know the wattage and voltage but not the amperage. The simplest way to find out is to divide wattage/power by voltage. Once you know the amperage; you can then follow an AWG (American Wire Gauge ) table to find your required gauge. Or use equivalent. Best to keep to your own countries measuring form. Although many companies use the AWG topology. Going to how does 1 know, which gauge for primary and secondary. Lets say you need 12 volts at 5 amps. So we need to convert it to wattage. Wattage/power = 12 * 5 = 60. We don't yet know the amperage for the primary but we know the mains supply and the wattage. Amperage = 240 volts / 60 = 4 amps. All is let to do is account for the power loss during conversion. This we would need to get from the manufacture of the core. Rest depends upon the quality of the magnet wire you've used and also the quality of your craftsmen ship. Its an Toroidal Transformer so the loss is small. So if the total power is 60 we could bump it up by upping the amperage and voltage a little (On the secondary). Also use an multimeter and an ammeter. Also beware the PSU circuit will have loss too. Good idea to first check the power loss of the bridge rectifier, regulator and any transistors you may be using. But if the PSU is already existing and you know its expected wattage/power input or you don't need 1 e.g. using straight AC. Then no worries and happy days. On the Primary could simply ignore it or just add a little more amperage to compensate for the slight loss in power. Don't forget to test its the right voltage before going big picture. We wouldn't want it to overload. So what we could do is put a light bulb between 1 side of the mains and 1 side of the primary winding. If it lights up then its safe to say it needs a lot more turns on the primary. If it doesn't its about right a little too much. But we could replace the bulb for a multimeter, which would tell us by how much we are out (Note that many multimeters are often slightly out. Especially the cheap ones). PS there is also an slight power loss when the transformer is under load. So perhaps give it a little more volts and amps on the secondary and account for any above the required in your PSU board. Hope this helps you? Happy winding :D
James Smith Sir suppose to be did not know the required amp of the transformer how do you calculate the wattage in order to the amp rating of the winding sir tnx
"42" is just a constant number which was deduced by experiments made in the past. The bigger the number, the better. If you already have a transformer and you want to find out if it was made with "42/S" rule, you can measure the voltage of one turn, calculate the S (=cross section area) of the core and you calculate that number. If it is less than 40, the transformer is not good and it needs more turns for the primary.
بھائی صاحب: گیج جو اترا ہے وہی لگانا ھے ۔اگر گیج کم کیا تو پاور کم ہو جائے گی۔ اور اگر گیج بڑا کیا تو کور پر صحیح طریقے سے نہی بیٹھے گا۔ کیونکہ گیج کے لئیے آپکو ٹرانفارمر کی پاور معلوم ہونا ضروری ہے ۔مثلاً اگر پاور 1000 واٹ ہو تو 220 وولٹ پر اسکا کرنٹ 1000/220 یہ 5۔4 ہوگا تو 5۔4 کرنٹ کے لیے آپ کو وائر گیج کا ٹیبل دیکھنا پڑیگا۔ تو جو گیج نکلے جیسے 8۔4 کے لئیے 15 SWG ہو تو آپکو اس سے ڈبل پتلی یعنے 28 یا 30 نمبر سے 220 کی وائنڈگ کرنا ہوگی ۔ اگر یہ سٹیبلائیزر ہے تو آپکو 280 وولٹ کے لئیے ٹرن دینے ہونگے۔ 25 ۔25 وولٹ کی تین ٹیپینگ نکال کر۔اگر ups ہے تو 13جمع 13 کی ٹیپینگ نکا لنی ہوگی۔
Thank you for the tips and formula's
Gracias profesor por sus enseñanzas un abrazo desde colombia Bogotá
Please view the complete chart of all constant number
Very good video friend.
Thanks friend
thanks for the video.
please can I use this toroidal transformer for a high-frequency DC-DC converter isolation transformer??
Hi! Good job!!!... can I use your formula for make a toroidal transf 12v 0 12v for make a inverter?
the output is 16-0-16.. can you add another 12-0-12? is it ok to put secondary 1st and the primary in last?
VERY EXLENT SIR ,PLS MAKE SQARE TYPE TRANSFORMER WINDING.
Thanks for watching
Well that's the first time I've seen anyone ALSO divide the height in half... I bet your getting some surprising voltage output...
Hi this is so helpful your so smart can I request the all formula and solving of this im a newbie. I currently studying electrician can you help me to improve my skill in winding thank you😂😂😇
Thanks for watching
@@InnovationKH The number 42 is a constant current or frequency ??
@@arismunadar7563 Its an constant when converting turn(s) to volts.
You'll first need to know how many cm/mm makes 1 complete turn. Some multiply height by width of 1 side (distance between inner and outer diameter). While others just use an measuring tape to get the exact length per turn.
Then we use the constant value of 42 to convert volts per turn. Once we know how many turns per volt we multiply it by how many volts is intended for the winding. This tells us how many turns in total is needed. Finally we then need to convert the total number of turns into metres or feet since we need to wind up the shuttle we're going to use to do the windings. Also would need to know this as we may need to order the magnet wire for the job. Of course we need to know the gauge to gives us the amps too. We can find this out by looking up on an SWG or AWG table.
Going back to the windings we need to work out 1 turn around the shuttle itself so we can do the same sort of Maths at the beginning. Once we need how many cm/mm is required per turn we then divide the total length required for the actual winding. So if the shuttle is 25cm and we need 35 metres we do 3000 / 25 = 120 turns. Add an little extra for error like a few metres or so. From here we know the exact length of wire we're about to wind on the core; so there is no need to really count the turns as we wind the core. But besides that, more importantly we have the right amount of wire needed for the winding. It be very bad thing to attach another wire to what's been winding as it needs to be consistent (Unless we want to tap it to have another voltage output/input).
You should study the tx there very well and distinguish the window and crossectional area then know the power rating of the tx wrt it.then you could comment what a big mistake they all had done here is without mentioning it how they could determine the dimension of a core?
When you test the windings with the bulb can you use a DC power source or does it have to be AC?
MUST be AC. A transformers work by changing current directions of AC power. But where does the 42 come from in second equation?
Hi, this is nice video. thanks for sharing.
Gratuluje cierpliwosci !!!!!!!!!!!!!!!!!!!!!!
Mnie wychodzi 11,2 zw/volt
bbbbbbbardzo dobry film dydaktyczny !!!!!!!!!!!!!!
This is so wrong! The rule of thumb TPV= 42/Ac (Ac = core cross section) is BS. The magnetic equation is B = (Vp x E+8)/ 4.44 X Np X Ac X f where B is the maximum usable core flux density in gauss, Vp is the primary high line voltage, Ac is the core cross section area cm sq, and f is the power line frequency. The figure 4.44 is a factor for sine wave excitation. B can range from 12,000 gauss for thick laminations (24 ga) to 17,500 gauss for thin (29ga) laminations. Tape wound toroids are made of even higher quality silicon steel with B max up to 17,800 gauss. Compare calculated numbers using this formula to the rule of thumb. I designed power transformers for 15yrs!
Ok buen video desde colombia
Thinking about making one of these myself for a custom application.
led ka balb kaise sahi kare
Sir may i know how do you calculate the wattage of the transformer in order to know the ampere of the primary and secondary magnet wires tnx sir
I had a short in the primary winding, the first few 3 or 4 turns it had connected to the iron core, there is no isolation in the middle. Why did this happen and can i cut of this small part of the wire if the bulb doesn't light up ? No short circuit anywwere else. Can i use the original wire for the secondary winding? Mine has much more secondary windings and thicker wire. :(
Thicker wire=higher current capacity, but everything depends on tor. core flux density. That is THE key to any transformer design. it is all about the magnetic field density the transformer supports.
@@jaackmcmahon8757 I repaired the primary winding and uses the original secondary winding, transformer is working.
great job, but please put the camera in better position.
Useful video 👍
Thank you
where do you have that 42 in the first formula ? An how do you calculate wire thickness based on the maximum current you want to have on the secondary ? Thanks
see my reply above to user "JAYATRONIK"
Is it true that primary winding thickness decide watts the larger the wire the higher watts, and secondary winding thickness decide amps the larger the wire the higher the amps?
Most of the power that toroid xfmr can carry depends on flux density of toroid and primary wire diameter.
Hi, I need your help I have the toroidal core at OD=20cm, ID=7.5cm, H=9.6cm (weight= 19kg) so which size of wire can use for input and output to get 8000VA (input=220V, output: 144v-96v-48v-0-48v-96v-144v).
Thanks I'm waiting for your reply.
how to choose the gauge (diameter) of coil (copper wire) ?
Good
thanks for sharing. nice video new sub here.
Very power full video
Nice
Kai aluminium wire ma formula change hota hai tpv find krna ka ?
អរគុណសំរាប់វីដេអូមួយនេះបង
Thank you so much for watching.
Suppose we need to start the calculation to the size of core and we want to design a transformer that function to what we expect? What ti start in calculating?
Sir , can you pls explain how you got that 42 while calculating turns per volt.
It's a rule. It's always true.
Its is a constant for all torroidal transformer
So, how's the capacity of this power supply? Thank you.
Brod, thanks. I am going to try but where the number of wire? The "S" symbol? Help me.
Secondary winding m dubbl wire use q hota h
Ya kisliy Kiya gya h
So which factor decides amps???
How to calculate diameter Cooper wire in primary & secondary ?
Find ampere first then see swg chart
How do you wind in the single-phase (Live, Neutral, Earth). What determines which is what wire?
The live and neutral are interchangeable. The earth would be connected to a shield made of a sheet of copper between the primary and secondary winding's. If your making an audio transformer do not use this as a ground source for the secondary side. Create a virtual ground. A shield is used to reduce hum, if you use this as a ground for the secondary it will not work, it will in fact make it worse.
Back in the day I ran a department for toroid coils with a winding machine’s. I also worked in lamination and finish and repair. At one time we made transformers for IBM.
I had a short in the primary winding, the first few 3 or 4 turns it had connected to the iron core, there is no isolation in the middle. Why did this happen and can i cut of this small part of the wire if the bulb doesn't light up ? So short circuit anywwere else. Can i use the original wire for the secondary winding?
@@Xantylon74
It should have been insulated with tape or mylar paper. You can solder the wires back together but it would need insulation underneath the wires and it has to keep the right number of turns of wires. Be careful they can curl your hair!
@@memaw5boys1girl14 Thank you! So even 2 Turns less from the primary winding would make a difference? It would increase the voltage of he secondary winding, but just a little, right? I'm going to solder it and use a heat shrink tubing or Tape. The winding can also be insulatet with normal electrical tape?
សូមប្រាប់លេខលួសផងបង ហេីយការធ្វេីនិងដូចគ្នារទាំងអស់មែនទេបងចុះបេីដុំដែកធំជាងនិងយេីងនូវតែធ្វេីដូចនិងមែនទេបង
Great job buddy your smart KH
Thank you
thank you. great
Thank you
Sir show us the computation to get the size of wire for input and output winding thanks with its corresponding amperes.
Sir please explain one current transformer calculation examples 300-150 /5-5A
Ive always watching your works but still i wondered?
thank you. Nice video
sir apne primery or secondry coil kitne swg k use kya he
Can u help me computation torodial dia 18 x 9 h=5cm and wire guage use in primary
thank-you sir,, Nice video
បងជួយផុសvideo កែអាំភ្លី ឡេីងគ្រាប់ ឡេីងកង់ដង់ អោយបុកសំលេងខ្លាំង បានអត់បង សូមអរគុណទុកជាមុនបង
រងចាំវិដេអូលើកក្រោយ។ អរគុណ
បាទអរគុណបង
42/S for 60Hz or 50Hz mains?
cheers from Indonesia
Not at all. Its just an constant to calculate the number of turns per volt.
@@jaycool5978 thank you mr smith
@@iblesbosuok no problem
A-0-A
Sir may nay 20+20v Ac ka transformer wind to kr lya h. 20+20v b nikalta h lkin jo agay card lga huwa h us ko ni chla rha wo heet ho jata h
No explanation for 42 on the calculations please whenever doing video do all the explanations.thanks you
Exactly my thoughts
can you not make the 1100 turns double wire so that it will only need 550 turns?
110+110V is Ok!!!
Yeh friend🙏🌈✍️
It's good
Plz explain.. how to select wire gauge for primary & secondary winding
Selecting the gauge depends upon how much amperage your require. If you know the wattage and voltage but not the amperage. The simplest way to find out is to divide wattage/power by voltage.
Once you know the amperage; you can then follow an AWG (American Wire Gauge ) table to find your required gauge. Or use equivalent. Best to keep to your own countries measuring form. Although many companies use the AWG topology.
Going to how does 1 know, which gauge for primary and secondary.
Lets say you need 12 volts at 5 amps. So we need to convert it to wattage.
Wattage/power = 12 * 5 = 60.
We don't yet know the amperage for the primary but we know the mains supply and the wattage.
Amperage = 240 volts / 60 = 4 amps.
All is let to do is account for the power loss during conversion. This we would need to get from the manufacture of the core. Rest depends upon the quality of the magnet wire you've used and also the quality of your craftsmen ship. Its an Toroidal Transformer so the loss is small.
So if the total power is 60 we could bump it up by upping the amperage and voltage a little (On the secondary). Also use an multimeter and an ammeter. Also beware the PSU circuit will have loss too. Good idea to first check the power loss of the bridge rectifier, regulator and any transistors you may be using. But if the PSU is already existing and you know its expected wattage/power input or you don't need 1 e.g. using straight AC. Then no worries and happy days.
On the Primary could simply ignore it or just add a little more amperage to compensate for the slight loss in power. Don't forget to test its the right voltage before going big picture. We wouldn't want it to overload. So what we could do is put a light bulb between 1 side of the mains and 1 side of the primary winding. If it lights up then its safe to say it needs a lot more turns on the primary. If it doesn't its about right a little too much. But we could replace the bulb for a multimeter, which would tell us by how much we are out (Note that many multimeters are often slightly out. Especially the cheap ones).
PS there is also an slight power loss when the transformer is under load. So perhaps give it a little more volts and amps on the secondary and account for any above the required in your PSU board.
Hope this helps you?
Happy winding :D
@@jaycool5978 thanks 😊😊😊
@@satishx2 no worries
Diameter of wire= ✓[0.4*I] mm.
James Smith Sir suppose to be did not know the required amp of the transformer how do you calculate the wattage in order to the amp rating of the winding sir tnx
Where does the 42 come from
Awesome video but the Tanpura type music gives me gas
Input & output range ke hisab se trodial core selection formula kya hai
Where you found the wir size????
Please,help with PDF tutorial of toroid,E and ferrite transformer
That's all good, still, I think there's been too many roundings (approximations).
What approximations? I have seen formula that include frequency and flux etc... Is this what you are referring to?
បងចំណាយពេលរំុវាយូរអត់បង ញុមមានដំុប្រភេទនឹងដែរចង់សាករំុ
ចំណាយពេលពេញមួយថ្ងៃ ចុកចង្កេះចុកដៃ ខ្លាំងណាស់ ទំរំាបានមួយ។ Thanks for watching
Toroidal Transformer core
Sir ye aluminium ka h
Where you take 42 from?
"42" is just a constant number which was deduced by experiments made in the past. The bigger the number, the better. If you already have a transformer and you want to find out if it was made with "42/S" rule, you can measure the voltage of one turn, calculate the S (=cross section area) of the core and you calculate that number. If it is less than 40, the transformer is not good and it needs more turns for the primary.
how to calculate the power of whole toroid and the currents of each leg
What's VA capacity of this transformer?
Always mention the power rating of the transformer.
Hey bro why you wire double on the secondary? What does that mean?
Dada full tanaforme ka winding calculation video updated karo
Test bulb How many watts?
Hi how did you select wire Gauge?
بھائی صاحب: گیج جو اترا ہے وہی لگانا ھے ۔اگر گیج کم کیا تو پاور کم ہو جائے گی۔ اور اگر گیج بڑا کیا تو کور پر صحیح طریقے سے نہی بیٹھے گا۔
کیونکہ گیج کے لئیے آپکو ٹرانفارمر کی پاور معلوم ہونا ضروری ہے ۔مثلاً اگر پاور 1000 واٹ ہو تو 220 وولٹ پر اسکا کرنٹ 1000/220 یہ 5۔4 ہوگا تو 5۔4 کرنٹ کے لیے آپ کو وائر گیج کا ٹیبل دیکھنا پڑیگا۔ تو جو گیج نکلے جیسے 8۔4 کے لئیے 15 SWG ہو تو آپکو اس سے ڈبل پتلی یعنے 28 یا 30 نمبر سے 220 کی وائنڈگ کرنا ہوگی ۔ اگر یہ سٹیبلائیزر ہے تو آپکو 280 وولٹ کے لئیے ٹرن دینے ہونگے۔ 25 ۔25 وولٹ کی تین ٹیپینگ نکال کر۔اگر ups ہے تو 13جمع 13 کی ٹیپینگ نکا لنی ہوگی۔
@@ranakhalid7577 thanks please write in english if possible appreciate your efforts
How to watt terrodle transformer?
how to wanding high swg wire
Same applies SWG is Standard Wire Gauge. Just look on an SWG table and select the required gauge based upon how many amps you require.
How to calculate wire diameter ???
Please change your background music
What is the rate of core
Bro how did you get the 0
your video is not complete what are guage of wire are u use for your primary and secondary
? Tolerans % 5? Video like
Thanks. Why you took hight hLf. I saw some youtuber not taking it. Plz clearify
Where does it come from 42
like
Haha please give the the complete chart of constant number. 42 ???
Amp?
Trodial Transformer core selection video link send me
Please wire gage .,?
Where I buy the core
You could probably strip one from old hardware like this guy did. Or, just google, iron core for torroidal transformers and see what you find...
How to connect to test via light ?nice day to you..
Aap bolate hue transformer
change wire diameter 0.55mm = 0.6mm ? thank you first!!
can, 0.6mm
@@InnovationKH thank you
សុំសួរមួយបងរបៀបគណនាជុំជួយប្រាប់ផងបង
How to find wire no.
Appkepas tranasfarmar milayaga
La Cri…s de musique.
42 បានមកពីណាបង
What is 42 value?
Dc60 0 60v ac 220
friend can you fix the download link
Amp:?
Ampare ki hisab kaha gya, incomplete video