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-   -   transformer load on MOSFET??? (http://www.diyaudio.com/forums/solid-state/37927-transformer-load-mosfet.html)

AudioGeek 16th July 2004 04:34 PM

transformer load on MOSFET???
 
Hypothetical question:

I have a MOSFET that I will run at 40v 1A bias. I want to connect it to a 64:8 impedance transformer.

How do I determine what inductance, size, etc.. of this transformer???

Help!!

Let me know if you need a schematic.

johnnyx 16th July 2004 05:19 PM

Transformer loading
 
I know that the inductance determines the low frequency cut - off point, and the leakage inductance determines the high frequency cut - off point. Possibly where the reactance equals the secondary impedence reflected onto the primary. 64 ohms, if the turns ratio matches 8 ohms load to 64 ohms primary impedence.

This is something valve (tube) guys do all the time, so maybe you should ask there. I remember load lines and stuff:D

Hope this helps

AudioGeek 17th July 2004 01:32 AM

well...
 
for now i am going to use a 10 pound core and try and gap it for 3A.

i think


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