Build This MoFo!

PRR

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Joined 2003
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Thank you very much for the elect-tech fiction(?).

I believe it may be a useful genre. I have not got as far as sketching one. I will note that Gus' Garage in Popular Science gave good (car) tech lessons in story form. Also I believe POWER magazine around 1910 published some extensive explanations of hydrodynamics in the form of un-edjucated dialect between the Old Guy and the New Kid.

I object that it has no Dames, no Guns, and no Murders. Unless the "beginners" end up murdering MOSFETs by not understanding the bias instructions. What is "P1 minimum setting"? Left? Right? Facing which way? I could see wrong-way leading to 4 Amps and 60 Watts dissipation-- quick death. _I_ think it should self-adjust, but resistor is wasteful and when I added a NPN servo it complicated the plot.
 
I'm no expert, but if do some quick calculations, I don't think a lot of inductance is needed. Won't a Hammond 159ZE be a good and cheap solution?

28mH should have a -3dB at 5Hz. And this one can take upto 3A. Only 19 euro's.

Edit: or use two of these in parallel. Or the 159ZC in parallel. A lot of inductance and current capacity....
 
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It could be because of the increased Ciss on the 250sA buffer in front of it should make the comparison fair:)
Good point Dimkasta yes, I do need to try with IRFP250 to understand why is optimal for MOFO.
Maybe Santa brings me some gift from Mouser in December

FABs can also use 195R10 or even 195R20 to match their plutonium-powered PSUs :p

Haha yes for Super Dude Ultimate MOFO :yikes:

193T is 4 times less heavy and 2 times less pricey if compared with 193V
193T Hammond Manufacturing | Mouser France
http://www.mouser.com/ds/2/177/5c0033-71126.pdf
 

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I have read the post 27 of Soundhappy an hour ago. And I just posted my post (10 minutes ago). But for some reason my "new" post is 25, and the "old" Soundhappy post is 27.

And my post has a 9 AM time stamp (it is 11 AM over here).

Edit: partly answer from the bottom of the page: All times are GMT. That explains the time stamp. But not the post numbering. Never mind.
 
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I have read the post 27 of Soundhappy an hour ago. And I just posted my post (10 minutes ago). But for some reason my "new" post is 25, and the "old" Soundhappy post is 27.

And my post has a 9 AM time stamp (it is 11 AM over here).

All OK edited my post for additional commentaire naturally number is changed. Have a nice day :)
 

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I really like the simplicity of this design. :)

Class A SE, with only 1 active part AND a half decent efficiency. Also not to difficult to drive (high input impedance) AND good damping.

I use a SRPP 6N6P preamp, that can swing close to 100V RMS if needed. But at 1000 ohms or something. So I was already thinking of building a power follower (such as the F4 or F6 with different input transformers).

A huge heatsink and 4 powertransformers are already available. Now I only need to source a couple of chokes (159ZE looks most promising).

Thank you for this inspiration.
 

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