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How to make or design this? Answered

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I want to make a CFL inverter powered by 12 voltage battery and a 220 voltage AC.

Some people say it signal transformer or SMPS transformer that’s why I did not mention the name of it. To make and design the transformer what is the formula and materials is needed?

Please! Please!!  Please!!! Help me to design this transformer.

Thanks in Advance.

8 Replies

user
steveastrouk (author)2012-09-19

Probably best wound on a RM series core like these. They're a lot easier to work with then toroids.

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robi_ncc (author)steveastrouk2012-09-19

If toroids is easy so please guide me to design my own.

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steveastrouk (author)robi_ncc2012-09-19

Toroids aren't easy. I said RM series cores

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robi_ncc (author)steveastrouk2012-09-21

What size of RM series cores is needed to build it? And it is very heard to find RM series cores in my country but E & I ferrite cores are available.

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steveastrouk (author)robi_ncc2012-09-21

What country are you in ?

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robi_ncc (author)steveastrouk2012-09-22

I live in Bangladesh. It’s a developing country. So not all component are available here.But I see some "E" & "I" ferrite cores are available. Can you give instructions to build the transformer with "E" & "I" ferrite cores.

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mpilchfamily (author)2012-09-19

It tells you on the schematic how many turns you need. Just a matter of figuring out the best diameter of wire to use and finding the teroids needed to wrap the wire around.

The upper image calls for a transformer with 40 turns on the primary coil (22 aug wire should be fine) and 500 turns on the secondary coil. Then it has a small 15 turn inductor at the base of the BD679. 15 turns of of 22 AUG wire should be sufficient.

The lower image doesn't give any details about the transformer or what kind of input and output specs the transformer should have. Though L1 will be a simple coil of wire with no teroid needed (according to the schematic).

In the end you will need to weigh the cost of materials versus the cost of buying the transformer you need. Chances are the transformer itself may be cheaper.

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robi_ncc (author)mpilchfamily2012-09-19

Can you give me more info about teroids transformer? Please help me to design my own teroids transformer.

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