Should I drive a transformer with a square wave? Won’t this have a negative impact on efficiency?
..That kind of describes how its done in an LLC resonant converter.....
A full bridge is a bit of a simpler way with square waves.
Try my course, below...the "topologys -hard switched" folder shows you the different ways to do it in simple annotated sims in the free download ltspice
https://drive.google.com/open?id=0B7aRNbu3Fes4TU92Mkw3YlA3ams
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The transformer you show looks like a low power flyback transformer, i doubt it would be good for 150w.
You really need to know the core details from the datasheet....but the core type isnt even spec'd.
At 150w you need to be able to assess if you are in saturation or not...but without the core AL value, how can you find the saturation current..you cant.
....I(sat) = B.A.N/L
....But A = area is not even given
I assume there is almost no benefit in designing your own supply.
You are absolutely correct...theres everything available off the shelf, and mostly from China.......but i wonder....if a country just buys from China....how does it have enough indiginous staff available to design power supplies for its military?
...or supposing Airbus need power supplies designed.......they cant just import stuff from China for that...Airbus must build in-house, with EU citizens working in their EU factorys...but where do they get the power suply engineers from when the whole industry has been farmed oiut to China?