Babelfish XJ , or JX …….. or whatever (Aleph X servo for Greedy Boyz)

[Zen Mod]

Did I said that they’re Gorgeously sounding ?

 

[Zen Mod]

implementing servo in your existing Aleph X

it's easy ;

just look at (re)attached schm , taken from LTSpice (open it in new tab) ;

you can use small veroboard , to accommodate parts bracketed and labeled as servo - two small T092 transistors (any decent NPN 1W will do the job)

you have to connect 5 wires & GND:

-Vcc+
-Vcc-
-sense from neg out
-sense from pos out
- servo out to sources node of input LTP
-GND

decrease slightly current through LTP CCS , to allow servo circ to compensate;

replace McMillan resistors with new ones, at least 10fold in value vs. present ones

rebias/reset entire thingie

 

[WBS]

Ahem... I just want to say it looks like several resistors need to go on a weight loss program... They look kind of chubby. 😀

Those resistor stand-offs are kind of cool!

All in all an AWESOME build. But that's to be expected from the Mighty ZM! I wish I could take it for a drive. 🙂

 

[mpmarino]

I wish I could take it for a drive. 🙂

Same here - nice unique design 🙂

Will they drive an F4 ??

 

[Zen Mod]

naah ......... buggers are too wimpy to drive F4s

choked with those fatty resistors



appropriate pic included (collected nasty habit from the States - damn filter coffee ......... and I was Real Man , drinking just strongest Turkish Coffee ) :

 

[kasey197]

Wow Super fuglicious zen mod !!
+those ribbon cables really give these a neat build look.

I'm sure the proud owner of these babies is gonna absolutely love em!

 

[WalterW]

Wow, ZM is that one of these boxes with 8 heatsinks?

Is the plate where you mounted the IRFP outputs on, not too much brushed? Shouldn't it be smoother?
is the way you are mounting your Frontend boards, also the way passlabs does it? With the two alu bars?

 

[Zen Mod]

yup , those ;

regarding quality of case , everything is top notch ....... so mounting of outputs is also no brainer

PL way of mounting - dunno , this way is logical to me , so why not

 

[WBS]

I thought any descriptor using the word fugly, fuglicious or variations thereof were copyrighted by ZM! I seem to remember having my soldering iron slapped for using it once... 😀

 

[Zen Mod]

so ....... I'm not deserving Fugly! ?

I was convinced that anything , and in any shape or form , made by Mighty ZM is no less than Fugly!



Though ....... Buddha is feeling best , sittin' in Ikebana style prototypes ......

 

[mpmarino]

so ....... I'm not deserving Fugly! ?

I was afraid of being a copy cat....

FUGLY!

 

[WBS]

Of course you're deserving. I just didn't want to infringe on your copyright! 😀

It is the FUGLIEST I've ever seen!!!

 

[Luke]

Beautiful🙂

 

[Dennis Hui]

I was convinced that anything , and in any shape or form , made by Mighty ZM is no less than Fugly!

I thought that went without saying. 🙂

Fantastic build to remind the greedy boyz of the Aleph-X.

 

[Zen Mod]

ready for transport 🙂

 

[JimT]

A photo of the inside would be extra fugly.

 

[Zen Mod]

Plethora of these

🙂

 

[JimT]

Very plethory. Thanks. Lovely amps.

 

[Zen Mod]

also important thing about implemented servo

......... I'm sure that I saw principal schematic somewhere in Papa's s papers/projects ; even if I tried repeatedly , I simply couldn't find it again , due to enormous number of files I have stashed along the years .
So , even if I can't reference it precisely , it is important to say that all puzzles are his , as usual.

 

[needtubes]

I recall seeing a servo circuit like that near the end of the Aleph-X thread in these forums. Is that not the original source?