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
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
Attachments
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.
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.
I wish I could take it for a drive.
Same here - nice unique design
Will they drive an F4 ??
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?
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?
Attachments
so ....... I'm not deserving Fugly! ?
I was afraid of being a copy cat....
FUGLY!
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.
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.
......... 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.
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