Search found 35 matches

by pishtak
Thu 15 May, 2014 11:02 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

Re: G120D Scanner Amplifier (Scannertreiber) Design

hi there,

sorry to all for late replies.
i need to check "my stock" to see what is available.
contact data posted above are 100% correct :-)

regards

pishtak
by pishtak
Sat 10 Dec, 2011 9:14 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

Re: G120D Scanner Amplifier (Scannertreiber) Design

hallo,

im normalen zustand (funktion) ist DISABLE signal negative spannung. diese negative spannung ist auch
an katoden D1,D2 und D4. wenn OVERPOSITION SHUTDOWN schlagt, VPOS ist mehr als +5V oder weniger
als -5V, dann kriegt mann eine positive spannung an pin 7 U6D oder pin 8 U6C. Dann ist auch ...
by pishtak
Thu 08 Dec, 2011 5:45 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

Re: G120D Scanner Amplifier (Scannertreiber) Design

Hi Eu1eOne,

Of course amp with full bridge (H-Bridge) performs better.
Details here: http://www.laserfreak.net/forum/viewtop ... 046#p58046

Regards

pishtak
by pishtak
Thu 08 Dec, 2011 3:53 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

Re: G120D Scanner Amplifier (Scannertreiber) Design

Hi,

I have now 2pcs of G120Amp10 available.
10EUR/1pc for current revision (RN,CN,RC,CC must be soldered on the bottom as I posted above).

I can let produce 4pcs of G120Amp10B (RN,CN,RC,CC will be added to PCB layout).
15EUR/1pc.

Shipping not included in price.

Regards

pishtak
by pishtak
Thu 08 Dec, 2011 2:52 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

Re: G120D Scanner Amplifier (Scannertreiber) Design

Hi Thomas,

Is clear that chinese CT clones are cheap and some of them performs well :-)
When I started with this "project" few years ago, situation was not like today.

Anyway it's a challenge for me and makes fun. I'm posting results just to let
people know. Maybe there are more "freaks" like me ...
by pishtak
Wed 07 Dec, 2011 9:25 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

28Kpps @ 8° optical ... mmm ...

ilda test pattern running 28Kpps @ 8° optical (+/- 4°) doesn't look bad,
but if you look at X and Y pulses, there is little over and undershoot visible.

pishtak
ildatp3s.jpg
ildatp4s.jpg
ildatp5s.jpg
xpls1s.jpg
ypls1s.jpg
by pishtak
Tue 06 Dec, 2011 1:49 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

Update

G120Amp10 is working. ILDA Test Pattern is running well 24Kpps @ 20° optical (+/- 10°).
Parts CC,RC,CN,RN mentioned in enclosed schematics must be added to PCB according enclosed picture.
H-Bridge is stable. Details about design in enclosed simulation using TinaTI (free).

pishtak

PS: PCB layout ...
by pishtak
Tue 25 Oct, 2011 6:41 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

Re: G120D Scanner Amplifier (Scannertreiber) Design

zwei versionen werden gebaut.
G120Amp9 (mit 1stk OPA2544)
G120Amp10 (mit 2stk LM3886)

mfg

pishtak
by pishtak
Wed 19 Oct, 2011 4:14 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

Re: G120D Scanner Amplifier (Scannertreiber) Design

hallo,

update zu G120Amp. einige besserungen sind da.
zur zeit nicht getestet, aber if hoffe ich werde bald zeit zu testen haben.
hauptsache ist funtionalitat von h-bridge.

verbesserungen:
- high frequency damping is weg (wirklich nicht notig fur G120D)
- eingang ist simpler
- pre-emphasis ist zu ...
by pishtak
Wed 14 Jan, 2009 9:36 am
Forum: Dioden- & Festkörperlaser
Topic: unlineare Verhaltensweise bei CNI 532nm 500mW
Replies: 30
Views: 11502

Linearity and Modulation

Hello,

Linearity and modulation behaviour of C** lasers compared to competitve
L****W**e was nicely demonstrated here:

http://www.photonlexicon.com/forums/showthread.php?t=3674&page=2
(post #29)

I have 300mW 532nm C** laser and and I also observed that my 300mW
starts to lase when modulation ...
by pishtak
Tue 13 Jan, 2009 9:55 pm
Forum: Dioden- & Festkörperlaser
Topic: unlineare Verhaltensweise bei CNI 532nm 500mW
Replies: 30
Views: 11502

It's all about temperature I think ....

Hello All,

I also think it's all about temperature control. Using simple PID controller
it's not so difficult to have temperature stability of 0.1°C. I'm not the scientist.
I treat myself more as application engineer. I used only public available resources
and designed PID temperature controller ...
by pishtak
Tue 13 Jan, 2009 6:33 pm
Forum: Dioden- & Festkörperlaser
Topic: CNI 9pol D-SUB Belegung gesucht
Replies: 68
Views: 55392

I'm wrong or not ?

Hello there,

Really nice work the new CNI driver with possibility of cooling/heating.

But:

On original driver (9pol connector) is NTC thermistor and TEC connected
with one common wire which is conntected to GND. This is same for LD
and also for crystal. See enclosed picture.

With original +5VDC ...
by pishtak
Mon 19 Nov, 2007 4:16 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

B oder C

Hallo,

Bei mir waren das BC847BT und BC857BT (Philips)
Also mit B typ soll kein problem sein.

pishtak
by pishtak
Fri 09 Nov, 2007 8:37 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

Netzteil

Hallo da,

Meine galvos sind durch alu-chasis "grounded".
Ich habe mit meinem setup nie probleme mit "grounding" gehabt.

Meine Wiring und Netzteil bespiele.

Gento hat ganz schone ergebnisse :-)

Und die anderen von euch ?

Mfg.

pishtak

edit:

PS: +15V_A resp. -15V_A ist nur markierung, man kann ...
by pishtak
Tue 25 Sep, 2007 7:42 pm
Forum: Termine
Topic: Regensburg 2007: Letzte hoffnung, Leute aus Osterreich !
Replies: 2
Views: 2595

Regensburg 2007: Letzte hoffnung, Leute aus Osterreich !

Hallo Leute aus Osterreich,

Mein mitfahrer hat heute abgesagt also ich suche:

Mitfarher (max 3. personen) so ich so lange weg nicht allein fahre
oder
Jemandem der mich aus Wien / Osterreich mitbringen kann.

Ich wohne cca 80km von Wien / Osterreich.

Hmm ?

Mfg.

pishtak

E-Mail: pishtak ...
by pishtak
Wed 19 Sep, 2007 7:50 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

Kuhlkorper

Hallo,

Ein paar photos von meinen Kuhlkorper.
In betrieb bleibt die Temperatur unter 35 °C.

Es ist nicht dirket auf Alu-Chasis montiert.
Warme von Kuhlkorper geht nicht an Alu-Chasis.

Mfg.

pishtak
by pishtak
Wed 19 Sep, 2007 6:27 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

Re:

Hallo,

Feedback vom Scanner am Stecker (Vpos)
war genau for safety gedacht :-)

Sieht aus, das ich gut gemessen habe (cca. 500us fur fullstep).

mfg.

pishtak
by pishtak
Wed 19 Sep, 2007 6:17 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

Re:

Hallo,

Hier in Slowakei sind die J112 nicht so exotisch.
Ersatz typ kann 2N5459 sein. Auch exotisch bei dir :-).

Fur OPA544 is vielleicht besser R9=1Ohm,
C12= 10nF (nicht 220nF wie bei LM675).

Fur ideale boucherot werte immer datasheet lesen !

Anderung: C43 weg (war 1nF), R21 soll 10k sein ...
by pishtak
Thu 06 Sep, 2007 8:09 pm
Forum: Allgemeine Selbstbau-Projekte
Topic: LM7912 macht -17,8V
Replies: 10
Views: 4557

79xx

Hallo,

Ich habe dieses problem auch mit 7915 von ST gehabt.
79xx von ST muss man zuerst belasten und dann OUT spannung messen !
Das habe ich schon ausprobiert und es hat funtioniert.
Iout cca 20mA dann messen (min. ist 5mA).

In english: http://www.hw-server.com/docs/stabil79.html

mfg.

pishtak
by pishtak
Tue 21 Aug, 2007 5:29 pm
Forum: Scanner & Scannertreiber
Topic: Scanner Speed limit :) lesenswert
Replies: 10
Views: 6644

MEOS

Hallo,

Dieser artikel habe ich vor 2 jahren aus MEOS web runtergeladen.

Ehemalige link funktioniert nicht.
http://www.meos.com/PDF/ENP28.pdf

Es ist jetzt bei mir hier:
www.technoroam.sk/lasershow/downloads/ENP28.pdf

pishtak
by pishtak
Mon 09 Jul, 2007 4:15 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

Adjustment procedure

Hello All,

Lot of people asked for "Adjustment procedure"
so here it is.

www.technoroam.sk/lasershow/tuning.html

Regards

pishtak
by pishtak
Mon 02 Jul, 2007 2:19 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

Test pictures

Hello,

After quite long time :-) I was finally able to take some pictures:

ILDA Test Pattern at 15Kpps @ 40° optical (+/- 20°):
http://www.technoroam.sk/lasershow/images2/15K40_1.JPG
http://www.technoroam.sk/lasershow/images2/15K40_2.JPG
http://www.technoroam.sk/lasershow/images2/15K40_3.JPG

ILDA ...
by pishtak
Tue 06 Mar, 2007 1:14 pm
Forum: Software & Programmierung
Topic: Optimus Plus
Replies: 58
Views: 31895

Frames

Hallo,

Hier sind "frames":

http://www.technoroam.sk/lasershow/down ... planes.rar

und "animations":

http://www.technoroam.sk/lasershow/down ... s_anm1.rar

Format 0 und 1 hat funktioniert. Format 3 nicht.

Vielleicht hilft es.

mfg

pishtak
by pishtak
Mon 05 Sep, 2005 9:10 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

PCB Relay

Relay kann man bei Farnell.uk bestellen

Tyco Electronics / Schrack
V23092 A1024 A301 Farnell order code: 959352 4.65GBP / 1 Stueck.

Bis jetzt habe ich 4 Platinen gebaut und alle funktionieren ohne probleme.

pishtak
by pishtak
Fri 19 Aug, 2005 1:22 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

Hallo Gento,

Also ich schreibe nur was ich mit meinen klienen Oszi
gemessen habe (ich probiere ein bild zu machen).

Zum testen habe ich ILDA test bild benutzt. Ich habe gelesen
das man ILDA test bild nur bei 12K benutzen kann.

Ich habe aber 18K gelaufen 20 grad optisch (nicht full angle = 40 grad ...
by pishtak
Fri 19 Aug, 2005 12:55 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

Preemphasis Info

Noch kurze info zu preemphasis.
Preemphasis ist fur error signal Verr gemacht.
Amplitude-Frequency charakteristik sieht man auf das bild.

Es kann sicher besser gemacht werden :-) aber prinzipiel
funktionert es auch so.

pishtak
by pishtak
Fri 19 Aug, 2005 12:16 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

G120D Treiber

Hallo Leute,

Ich probiere auf deutsch. Ich habe nur kleine anderungen gemacht
und ILDA test bild lauft schon bei 18K pps bei 20 deg. optical.
Wie ich gelesen habe (http://www.meos.com/PDF/ENP28.pdf)
kann G120D bei 40 deg. optical (peak to peak) nur 12K.

Leider habe ich nicht geschaft gute bilder ...
by pishtak
Tue 09 Aug, 2005 7:06 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

Again.

pishtak
by pishtak
Tue 09 Aug, 2005 7:04 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

Schematics

Hi,

One more time schematics.

pishtak
by pishtak
Tue 09 Aug, 2005 6:34 pm
Forum: Scanner & Scannertreiber
Topic: G120D Scanner Amplifier (Scannertreiber) Design
Replies: 98
Views: 84280

G120D Scanner Amplifier (Scannertreiber) Design

Hi Everybody,

Here are results of several months long work on simple scanner amp.

I studied all available sources about Scanner Amps anlayzed them
and according those information I put together this.

This is nothing new ! I just put existing schematic parts togehter.

All sources were free ...
by pishtak
Mon 18 Apr, 2005 4:57 pm
Forum: Scanner & Scannertreiber
Topic: TurboTrack 2
Replies: 9
Views: 7223

H Bridge in Galvo Drivers

Hi Bill,

Can you shortly explain what is the purpose of using H Bridge to drive
Galvos ? In Audio amplifiers it is used to have higher voltage swing at output load.

Regards

pishtak
by pishtak
Mon 18 Apr, 2005 4:44 pm
Forum: Pangolin Lasershow Designer & Tools
Topic: Pango auf dem Amiga
Replies: 4
Views: 4189

LSD1000 on Amiga

Hi,

This is probably an old topic, but I'm using LSD1000 on Amiga 1200
without any problems. Of course blanking is not available :-( But you can
still produce nice show with it. If somebody needs help regarding Amiga, let me know, I'm an old AmigaFreak.

Bye

pishtak
by pishtak
Mon 11 Apr, 2005 8:10 am
Forum: Dioden- & Festkörperlaser
Topic: Operating conditions of DPPS lasers. Overheating problem ???
Replies: 2
Views: 2579

Hallo Hatchi,

The manufacturer only said:

"You should keep the laser well cooling down with a heatsink, and also you'd better operate it within 4 hours continuously, then rest the laser. That will be good for the laser."

They didn't send me manual. All specifiactions are on their website.

I ...
by pishtak
Sun 10 Apr, 2005 4:57 pm
Forum: Dioden- & Festkörperlaser
Topic: Operating conditions of DPPS lasers. Overheating problem ???
Replies: 2
Views: 2579

Operating conditions of DPPS lasers. Overheating problem ???

Hello,

I'm from Slovakia, I'm 29 years old electrical engineer, and I started to build my first laser projector one year ago. My budget is not very big so at the moment I use laser head from Viasho VB-150 532nm, open-loop scanners G124 driven by Accelerator 124 Amps. I'm pretty old Amiga Freak so I ...

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