the inductance value that will determine whether or not a transformer core can be used, because inductance is closely related to the frequency of the voltage.
Not exactly, core has some usable frequency range that transfer energy through the core, if the f is too small then only small part of energy will be transfered.
@@moristo for me it is obvious it wont be working. You need to increase frequency and add lc filter on the output to cut off harmonics higher that 50..60hz.
Can you please help me with your equation? 250/core area. I am beginning winding transformer. Struggling to find the correct calculation. I need to divide 250 by the core area? Really new to this. Thank you
@@yoan975 my friend ferrite core needs more turns than iron core at low frequency so that 250 its a numbers and the core area=length ×wide . dimensions are measured in cm
No but 200-300hz is still considered low frequency. You could just run it through diodes and the output stage and still get a sine wave. That is how inverters worked in the 70s and 80s.
اخي شكرا على مجهودك الرائع بس مجرد استفسار لو سمحت ..طريقة اللف الاولى سبعين لفة ومن ثم لاصق ثم سبعين لفة ؟؟؟او سبعين تقسم على مرحلتين 35لفة ثم 35لفة انا لم افهم القصد ارجو مساعدتي
You noticed the big voltage drop that’s the same issues am having the only time the voltage stay at 230 is at 25 voltage not 12 volt the voltage gap between 12 and 24 is the issues low frequency inverter don’t hold god ac voltage at 12 volt even if the battery is a 1000 amp battery bank the voltage still drop by 18 % at 12 volt but only 5 % at 25 volt and 2 % at 48 volt but to get a better ac voltage stable at load it’s best to inverter the 12 volt to higher frequency transformer like ferrite core transformer to get 320 ac and rectified it with diodes to get 360 dc and use the low frequency pure sine wave drive to switch the higher voltage to get better power inverter
@@Telectronics see Oryo Dad below . For a given size core, ferrite material will saturate at a MUCH, much lower magnetic flux density than one made from iron powder
I need 15 cycles step up pulse transformer for 6kv in, to 28kv out as pulsed, not AC. I have E and I ferrite core set + plastic bobbin with piece tape as a gap to stop saturation. Should I change over to steel rod and wind that? The inductance is way higher on ferrite than same number turns on steel core.
Nice post. Having some ideas at last. Many thanks. I would like to build some low power 8 ohms:600 ohms or 600 ohms: 600 ohms transformers. To be used in audio filters etc. Can I have ideas please?
Está mal bobinado el trafo de ferrita deberás aumentar las vueltas tanto en el primario como el secundario. Tu placa entra en corto por ese tal motivo. El primario tiene muy pocas vueltas sobrecarga tu inversor si lo haces bien ese núcleo de ferrita debera tener más potencia que los otros transformadores convenciónales.
What a BS! A ferrit core transformer CAN work at 50Hz, if you use the correct number of turns! But his makes no sense, since the saturation limit (~0.3T) (flux density in tesla) is lower than with normal iron cores (1-1.5T). So you need 3-5 times the number of turns, which is not really economical.
![[430] How To Calculate Ferrite Core Maximum Power Handling to Design High Frequency Transformer](http://i.ytimg.com/vi/Fk2OeYY_poo/mqdefault.jpg)
![[430] How To Calculate Ferrite Core Maximum Power Handling to Design High Frequency Transformer](/img/tr.png)
the inductance value that will determine whether or not a transformer core can be used, because inductance is closely related to the frequency of the voltage.
Not exactly, core has some usable frequency range that transfer energy through the core, if the f is too small then only small part of energy will be transfered.
@@tomg8069 It should not wasteful of energy, right
@@moristo for me it is obvious it wont be working. You need to increase frequency and add lc filter on the output to cut off harmonics higher that 50..60hz.
@@tomg8069 I mean ferrite core is not suitable for low frequency on low inductance. That will wasteful energy.
ferrite core:
Turn per volt=250/core area
Iron core:
turn per volt=45/core area
Can you please help me with your equation? 250/core area. I am beginning winding transformer. Struggling to find the correct calculation. I need to divide 250 by the core area? Really new to this.
Thank you
@@yoan975 my friend ferrite core needs more turns than iron core at low frequency so that 250 its a numbers and the core area=length ×wide . dimensions are measured in cm
Sorry late comment but, isnt the iron core 42/core area?
Higly thanks friend
No but 200-300hz is still considered low frequency. You could just run it through diodes and the output stage and still get a sine wave. That is how inverters worked in the 70s and 80s.
Why u don't use bigger tape in the starting ?
اخي شكرا على مجهودك الرائع بس مجرد استفسار لو سمحت ..طريقة اللف الاولى سبعين لفة ومن ثم لاصق ثم سبعين لفة ؟؟؟او سبعين تقسم على مرحلتين 35لفة ثم 35لفة انا لم افهم القصد ارجو مساعدتي
You noticed the big voltage drop that’s the same issues am having the only time the voltage stay at 230 is at 25 voltage not 12 volt the voltage gap between 12 and 24 is the issues low frequency inverter don’t hold god ac voltage at 12 volt even if the battery is a 1000 amp battery bank the voltage still drop by 18 % at 12 volt but only 5 % at 25 volt and 2 % at 48 volt but to get a better ac voltage stable at load it’s best to inverter the 12 volt to higher frequency transformer like ferrite core transformer to get 320 ac and rectified it with diodes to get 360 dc and use the low frequency pure sine wave drive to switch the higher voltage to get better power inverter
Very excellent video sir with winding turns also you gave to Subsriibers 👍🇮🇳
Hello, and the inverse situation? what is the maximun frecuency for iron core, 1000Hz its posible?
I guess it's a problem of core saturation: ferrite cores saturate much before iron cores.
Yes I bet he needs just more turns at the primary side.
@@Telectronics see Oryo Dad below . For a given size core, ferrite material will saturate at a MUCH, much lower magnetic flux density than one made from iron powder
@@falconhawker yes you are absolutely right :)
Thanks for your clarification
I need 15 cycles step up pulse transformer for 6kv in, to 28kv out as pulsed, not AC. I have E and I ferrite core set + plastic bobbin with piece tape as a gap to stop saturation. Should I change over to steel rod and wind that? The inductance is way higher on ferrite than same number turns on steel core.
I think there is wrong in copper turns
Nice post. Having some ideas at last. Many thanks.
I would like to build some low power 8 ohms:600 ohms or 600 ohms: 600 ohms transformers. To be used in audio filters etc. Can I have ideas please?
thanks
where can i buy the transformer?
Where to get these kinda cores?
Try with 500 turns primer.
Está mal bobinado el trafo de ferrita deberás aumentar las vueltas tanto en el primario como el secundario. Tu placa entra en corto por ese tal motivo. El primario tiene muy pocas vueltas sobrecarga tu inversor si lo haces bien ese núcleo de ferrita debera tener más potencia que los otros transformadores convenciónales.
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Hello sir osm all video and help diode no.1.5 Ke33a same as any diode please help me sir
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Tanks
Good
hello.sir.
i want to get the inverter drive board combine with egs002 board
Sir than how it work on normal crt tv
Excellent video. I liked it
What a BS! A ferrit core transformer CAN work at 50Hz, if you use the correct number of turns! But his makes no sense, since the saturation limit (~0.3T) (flux density in tesla) is lower than with normal iron cores (1-1.5T). So you need 3-5 times the number of turns, which is not really economical.
Yes it can but not like that
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