Dan,
Has anyone built an output transformer for a 50V LDMOS FET (Freescale
device) that could lend some help with this?
I have some experience with such transformers. Not specifically with the
Freescale devices, but that shouldn't matter. Also with 100V supplies.
By my estimation a 16:1 constructed of (2) 4:1 Guanella?s should give a
satisfactory match to 50 ohms.
As long as they are for the correct impedances, yes. Building a Guanella
transformer for 3.1:12.5 ohm isn't entirely trivial.
The XFMR I've built currently only gives about 33% efficiency.
Tell me the details of its construction, and I should be able to suggest
improvements. Most likely the leakage inductance is killing it.
Manfred
========================
Visit my hobby homepage!
http://ludens.cl
========================
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|