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-   -   UcD like topology amp. ( 1st February 2008 07:12 AM

UcD like topology amp.
2 Attachment(s)
Here is my first selfoscillated (UcD like) amp.
Later i'm gonna gonna post schematic & pcb layout with measurements result.

Driver: IRS20955
Mosfet: IRFI4212H-117P 1st February 2008 07:15 AM

2 Attachment(s)
Totem pole (20V/div*500nS/div) : 1st February 2008 07:19 AM

2 Attachment(s)
LC out at idle (1V/div*500nS/div) : 1st February 2008 07:22 AM

2 Attachment(s)
Clip, load 6.5 Ohm resistor (20V/div*200uS) : 1st February 2008 07:25 AM

2 Attachment(s)
20kHz sine, load 6.5 Ohm resistor (10V/div*10uS/div) :
ps: signal asymmetry produced by low quality test generator.

phase_accurate 1st February 2008 07:35 AM

Very nice indeed.



Eva 1st February 2008 07:40 AM

Hey, where is the RF ringing? I don't see any :D:D:D

Good job, indeed :cool: 1st February 2008 07:50 AM

Hi Charles, thanks for reply.

Hi Eva, i think that my relativaly low scope eat ringing :), but it perfectly show terrible RF ringing of my early stuff :D .

acid_k2 1st February 2008 12:10 PM

Nice work,!
I like that.

Sure that you are not measuring a class A amp? :D or you are using a very esoteric filter.... :D

MaxS 2nd February 2008 03:26 PM

Hello and all,

Nice project.
What are voltage supply, something like +/- 45 V?

What is the approximate power ?
Maybe around 60 W and 260 W / 6R

Is it possible to get a copy of entire project ?

Thanks you !

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