Hi.
I've been researching building flyback and LLC resonant converters for a while now. I know you can buy flyback converters cheaper than you can buy all the components but it's a very interesting area.
A major stumbling block seems to be that the transformers required must be custom built.
Chinese manufacturers I've approached aren't interested in only a couple of transformers.
I've seen a youTube video where someone wound their own small flyback transformer with a manually operated winder with a counter but it's hard to get professional quality (the winder was actually meant for tube amp output transformers). The different diameters of magnet and triple insulated wire can be expensive and difficult to get too.
Anyone had any experience with obtaining or winding customer SMPS transformers?
Thanks.
I've been researching building flyback and LLC resonant converters for a while now. I know you can buy flyback converters cheaper than you can buy all the components but it's a very interesting area.
A major stumbling block seems to be that the transformers required must be custom built.
Chinese manufacturers I've approached aren't interested in only a couple of transformers.
I've seen a youTube video where someone wound their own small flyback transformer with a manually operated winder with a counter but it's hard to get professional quality (the winder was actually meant for tube amp output transformers). The different diameters of magnet and triple insulated wire can be expensive and difficult to get too.
Anyone had any experience with obtaining or winding customer SMPS transformers?
Thanks.
There are rather simple rules to follow but the proper way would be to learn from or at least observe work of an experienced craftsman.
Unless you do staff which requires safety testing/approval it's not that complicated. And yes the God is in the details.
You may discover whether or not flyback transformer is "a transformer" per say. Anyhow it requires some patience and common sense applied.
And yes I did wind quite a few. There are companies which make transformer for you. Most likely the price will be a part of the disappointment of yours.
Cheers!
BTW, Fairchild/Onsemi and, perhaps, TI have appnotes about LLC transformer internals.
Unless you do staff which requires safety testing/approval it's not that complicated. And yes the God is in the details.
You may discover whether or not flyback transformer is "a transformer" per say. Anyhow it requires some patience and common sense applied.
And yes I did wind quite a few. There are companies which make transformer for you. Most likely the price will be a part of the disappointment of yours.
Cheers!
BTW, Fairchild/Onsemi and, perhaps, TI have appnotes about LLC transformer internals.