Tools/raw materials Calculator, silicon steel sheet specification sheet, transformer skeleton specification sheet, enameled wire specification sheet, silicon steel sheet material 470 or 600 IE type Step / method 1, calculate the power of the transformer Transformer power = output voltage X output current For example, a transformer with an output voltage of 30V and a current of 10A according to the circuit requirements, 30V X 10A = 300W (transformer power) 2. Calculate the cross-sectional area of ​​the core of the transformer Transformer power X 1.44 = Y , Y open root X 1.06 = core cross-sectional area Transformer power 300W X 1.44 = 432,432 open root X 1.06 = 22.00 square centimeter (core cross-sectional area) 22 square centimeters = 2200 square millimeters (core cross-sectional area) 3, calculate the transformer core stack thickness Core cross-sectional area (mm 2 ) / 矽 steel sheet tongue width (mm) = core stack thickness 2200 mm 2 / 40 mm = 55 mm (stack thickness), the core size is a silicon steel sheet with a tongue width of 40 and a stack thickness of 55 mm. There is a problem here. Some people will ask why you can use 40 pieces of silicon steel to teach you an experience value. Stack thickness / tongue width = (1.0∽1.6), 55mm / 40mm = 1.375. Less than 1.0 with a small one size steel sheet, indicating that the sheet steel window is too large to be dissatisfied; greater than 1.6 with the larger size of the sheet steel, indicating that the sheet steel window is too small to wind. The specific specifications are compared with the specifications of the silicon steel sheet. 4, the choice of skeleton The core cross-sectional area is E40 X 55, then the skeleton is E40 X 55. Compared with the transformer skeleton specification table, there is just the skeleton of this specification. If it is not, it is OK to choose the stack thickness and the larger one. If amateurs are inconvenient to buy a skeleton, then do it yourself. 5, calculate the number of coil input primary turns 45 / core cross-sectional area (cm 2 ) X 220V = input primary turns, (45/22 cm 2 ) X 220 = 450 åŒ (enter primary number of turns) 6, calculate the number of secondary turns of the coil output (Input primary turns / 220) X output voltage = output secondary turns (450/220) X 30V = 61.36 (take the integer 62åŒ) 7. Calculate the winding diameter of the enameled wire 　 Current (open root) X 0.7 = wire diameter Output current 10A (opening) X 0.7 = 2.21 (output 30V wire diameter), input current = (300W transformer power / 220V input voltage) open root X 0.7 = 0.81 (input 220V wire diameter). 8, calculation results 矽Steel sheet specifications E40mm, stack thickness 55mm; transformer skeleton specification E40 X 55; input coil number 450åŒ, wire diameter 0.81 copper enameled wire; output coil number 62åŒ, wire diameter 2.21 copper enameled wire. Precautions Here mainly for electronic amateurs, the calculation method of the transformer is only suitable for small power supply transformers, and is made of EI iron core. At the same time, the circuit requirements are different, and the design requirements for the transformer are different. Please treat them differently. Due to different materials, the high-power transformers have different winding processes and different transformer structures. The design method is of course different. It will not be described in detail here.
Sound module,Recordable sound module:
Ningbo AST Industry Co.,Ltd has 17 Years Experiences to produce the Recordable sound module, sound module, sound chip, voice module, recordable sound chip,Musical module and other electronic modul. we can assure you of competive price,high quality,prompt delivery and technology supporting.
1. Sound Module Application:
Sound Module is one kind of electronic product which mainly applied for Greeting cards,Christmas cards, promotion gifts, kids books, newspapers, magazines or other products which have sounds.
2. Sound Module Classification:
We can produce different sound modules which have different functions:
A. Pre-record Sound Module ----The clients will provide their sound files to us as MP3 or Wav Format,Then we programme them into the Sound module,it will play the customized message.
The sound file can be from 1second to 480seconds
B. Recordable Module ---also called Self-recording sound chip,we can record our own messages and playback them. Of course,the message can be erased and re-recorded.
Recording time:6seconds,10seconds,20seconds,30seconds,60seconds,90seconds,120seconds,180seconds etc
C. Melody module --Which can play the Melody of the Happy Birthday,Merry Christmas,Slient Night and so on.
D. USB MP3 Module ---We Can download the songs,musics,sentences,voice,advertising language from PC directly. Which support SD Cards,TF Cards,U Disk and FM.LCD Display also can be made
E. Programmable Voice Module --Also can be called DIY Sound Chip,We provide the software and Programable Machine and the Clients can be programmed them at their office,factory or Home. Which is much suitable to small order quantity,but Prompt delivery order.
F. Waterproof Music Module --which usually are used by Children Cloths,Kids'Bib ,attract the children's attention or Sing the children's songs.
3. Sound Quality:Clearly and Loudly ( 16Khz Sampling Rate)
4. Activated way:
1) Pull String -- Pull the string to activate the sound.
2) Slide tongue,usually was used by greeting cards,open the cards,it will play the message automatically.
3) Push buttons--press the button to play the message/audio/music
4) Light sensor,usually was used by Gift box,newspaper. Open the Box or newspaper to play the message
5) vibration sensor,Move or shake it to play the customized audio
6) shadow sensor,if somebody walks front it,it will play the message.
7) Motion sensor,usually was used by Pop Display, advertising board and so on.when somebody walks front it,it will play the message.
8) PIR (Infrared sensor),usually was used by Pop Display, advertising board and so on.when somebody walks front it,it will play the message.
5. Long Lifespan
6. Speaker:21mm,27mm,29mm,36mm,40mm,57mm etc. Plastic or Metal
7. Battery:AA, AAA, AG13, AG10, AG3 and so on environmental
8. PCB available: customize size or our existed standard size
9. PCB:Customized Size (OEM or ODM) or our existed standard size
10. Certification:CE ,Rohs
11. Export to: USA, UK,Canada,Germany, Turkey,Russia,Poland,Switzerland,Netherland ,Frence Hungary ,Australia,New Zealand, Brazil, Columbia,Argentina,Thainland,Singapore , Malaysia and so on
Activation Sound Chip, Motion Sensor Sound Module, Pre-Record Sound Chip AST Industry Co.,LTD , https://www.astsoundchip.com
Many electronic amateurs like to test their own circuit debugging equipment, often encounter the circuit to try, the transformer does not know how to do? Reading books, checking the information on the Internet, a lot of formulas to see dizziness, or do not know how to design a transformer. Here to guide you how to calculate and design a single-phase 500W internal power transformer.