50 kpps and up...

[andy_con]

guys that know, could you list some scanner models and links like

starter scanners
medium scanners
pro scanners
out of this world scanners.

it would be good to see whats out there and what the daddy of scanners is?

[pishtak]

Hi Stefan,

Unlike the moving magnet scanners (Cambridge 6800 and its derivatives), the G120 has no thermal limitation to worry about. Even at maximum current, the scanner will only be required to dissipate around 2 watts. And if your scanner amps put out a nice clean signal, you will never wear out the bearings.

On the TurboTrack, we used to get 30K or greater out of G120 scanners. The question is, how good are your scanner amps? If you have really good ones (like the TurboTrack), then you can get some decent speeds, rivaling 6800 and derivatives. If you don't then frankly you will be lucky to get 12K out of them (which was the industry standard speed for more than a decade)...

Best regards,

William Benner

Hi William,

Thank you for reply. My own built amps for G120 (see my homepage
or this article) allow me to scan ilda test pattern:
15K @ 40 deg. optical (max. for G120),
20K @ 20 deg. optical (half of max.),
24K @ 8 deg.

I tried to achieve 18K @ 40 deg. without success yet, but it doesn't
matter, maybe some day :-)

I heard about TurboTracks a lot (these days hard to get, I think LSDI
stopped production). How fast can G120 with TT scan the ilda test
pattern @ max. angle (40 deg. opt.) ?

Did you have experience with LOBO Amp-3 ?

Best Regards,

Stefan

[-bart-]

Phishtac, you kinda hijacked my thread about using 50++kpps speeds :-(
No harm done.

Anyway, where did you get those pcb's from, and what is the estimated cost of the components? These amps seem affordable, small and fast. I Still have six G120 galvos (x&y with shift-blanking ) around that I would like to bring back to life.

[pishtak]

Phishtac, you kinda hijacked my thread about using 50++kpps speeds :-(
No harm done.

Anyway, where did you get those pcb's from, and what is the estimated cost of the components? These amps seem affordable, small and fast. I Still have six G120 galvos (x&y with shift-blanking ) around that I would like to bring back to life.

Hello bart,

Sorry for that, wasn't my intention to do it . I just used the chance
to get some answers.
I designed the PCB's myself and PCB manufacturer here in Slovakia
manufactured them for me. There are no critical parts in. LM675T and
relay were the most expensive parts (together around 30$). Parts for one
amp costs slightly above 50$ I think. I didn't make exact calculations.
My intention was not to make money with it (complete schematics and
PCB in Eagle v3.55 is available per e-mail) ! I worked on it to see if I'm
able to do it, to have some amps for G120 I have, and to help others
which have G120 just laying around . I saw many not so successful
attempts to built something similar.

Best Regards

Stefan

PS: If you are too angry on me, let's move the discussin from "your"
thread to this one

[clandestiny]

here is a little something for your viewing pleasure- turbo trac scan amp-
50k modded will run g120's or cambridge 6800"s-