ferrite or iron powder transformer

I would expect that not only would it be custom-wound, but quite the challenge to get it right -- to the point where you'd want to be as much of a transformer winding expert as a circuits guy to get the whole shebang working, and you'd be trading off circuit topologies vs. transformer designs during the design phase.

I'd be interested in seeing how it works out for you.

The best link I've found so far is:

cheers, Jamie

You've told us very little about the requirements. Among the most important are input and output voltage and current and available airflow. Do you care about size, weight, cost, EMI, agency approvals?

Hi,

Paul Mathews wrote:

I have just started this project and don't know the input signal yet very well, but the outputs of the power supply will be either 120VAC or

topology is push pull fullbridge

primary 7 taps maximum 500V/7Amps 3.5kW max secondary 5 taps maximum 340V/10Amps 3.5kW max

multiple parallel transformers?

CSA/UL/CE approval are important

efficiency important

Jamie

"Jamie Morken" skrev i en meddelelse news:6TyMi.279365$fJ5.180227@pd7urf1no...

Why? Half-bridge is easier to get to work especially at the 500 V.

Multiple parallel power supplies would be much, much easier to handle, especially if you get enough of them so that something half-way COTS can be purchased (Above 300W or so, the market grows thin). The "taps" sort-of alludes to multiple outputs anyway.

Can't be. Not with the 1:10 input voltage range!

For 50/60Hz, powder cores or ferrite cores are *not* recommended!

Well I have found that it will most likely be a planar transformer design.. these things are amazing! No skin effect to worry about at

cheers, Jamie