Search found 82 matches

by siliconGary
Mon May 22, 2017 2:34 pm
Forum: Photography Through the Microscope
Topic: PCB with ceramic capacitor
Replies: 7
Views: 2254

Really nice, the sample polishing is excellent.
by siliconGary
Wed May 17, 2017 8:09 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Automating saving PMax and DMap images as JPEGs - any ideas?
Replies: 3
Views: 1289

I just checked Kolor and it accepts .TIF as input files. What is the reason why you need to convert to JPEG prior to stitching rather then after? (I use Hugin for stitching, which accepts .TIF and ouptuts as .TIF I do a final conversion from TIF to JPEG in RawTherapee where I can adjust contrast and...
by siliconGary
Thu May 04, 2017 1:13 pm
Forum: Photography Through the Microscope
Topic: Hard Drive R/W head
Replies: 2
Views: 1037

Hard Drive R/W head

I saw there have been quite a few excellent macro shots of hard drive heads posted in the macro forum, but did not see any microscopy images of the heads. This is from a teardown of a 2004 hard drive It is a stitched set of stacked images (Stack 'n' Stitch ;-) (Hugin stitch, Zerene Pmax stack), Olym...
by siliconGary
Fri Apr 21, 2017 6:39 am
Forum: Equipment Discussions
Topic: Clutching at Straws for a Low Power Projection Lens
Replies: 8
Views: 1611

John, I did that same search looking for good solution for the BH2 trino-head. The NFK solution (even 2.5x forget 1.67x which are rarer than hens teeth today) was out of my budget, and you still the need to get the 150mm extension tube, plus adapter as well as the NFK lens. In the end I went with a ...
by siliconGary
Fri Apr 14, 2017 6:19 pm
Forum: Photography Through the Microscope
Topic: SONY D3605R241
Replies: 2
Views: 730

Hey I have seen the circuit at the bottom of the first (And second) image :D :D It is also used in the Sony D2450 (Timing generator for ICX098 CCD). http://www.photomacrography.net/forum/userpix/5891_20x_4_stack_bottom_logic_shrunk_1.jpg I actually posted a (80x objective) image of this circuit in m...
by siliconGary
Fri Apr 14, 2017 1:13 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: RF Test Chip Image
Replies: 13
Views: 1534

Thank you both for the website complement, I have always found it a fascinating somewhat hidden world and there are very few chips without some interesting stuff or 'secret sauce' to find, Most ics are encapsulated in a hard plastic resin, which to remove it you need to dissolve in hot acid (Either ...
by siliconGary
Fri Apr 14, 2017 5:53 am
Forum: Equipment Discussions
Topic: Procedure for teardown and rebuild of Olympus BH-2.
Replies: 8
Views: 1551

Thanks for posting this. As a BH2 owner I know I almost certainly will have to attempt this at some point in the future, this will help immensely.
by siliconGary
Wed Apr 12, 2017 7:36 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: What is a good amount of stereo separation?
Replies: 16
Views: 5649

Rik, thanks for making and this clear sample I'm unable to see cross eye stereos, so I converted them to parallel and looked at them with a mirror viewer. For me the best spherical rendering is 6º. From 10º upwards the look very distorted I can't see them - can you detail what you mean by convertin...
by siliconGary
Wed Apr 12, 2017 9:55 am
Forum: Equipment Discussions
Topic: LED help
Replies: 14
Views: 1843

I am using the same LED on my microscope illuminator. I am driving it with a 2100mA BuckBlock driver http://www.ledsupply.com/led-drivers/buckblock-dc-led-driver that I think Pau put me onto. That is powered by an old iPad power supply, and is dimmable with a 20k potentiometer. They don't make a 300...
by siliconGary
Wed Apr 12, 2017 9:41 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: RF Test Chip Image
Replies: 13
Views: 1534

What surprises me is given 3 of the most important variables are fixed by the process (Metal thickness, dielectric thickness and substrate doping) why there are so many different design layouts for inductors other than just the number of turns. I recently looked at a Qualcomm transmitter designed in...
by siliconGary
Tue Apr 11, 2017 6:16 pm
Forum: Photography Through the Microscope
Topic: IC Die Photos
Replies: 12
Views: 2011

Why are some of the emitters so big? Emitter-follower so that's where the power gets dissipated? It's to do with current crowding phenomenom. The emitter doping layer is very thin, and conduction occurs at the edge of the junction, to maximize the current flow you need to maximize the emitter circu...
by siliconGary
Tue Apr 11, 2017 6:11 pm
Forum: Photography Through the Microscope
Topic: IC Die Photos
Replies: 12
Views: 2011

Very cool. These are large components... Nice to see them - unlike today's modern GP102 based systems (nVidia GPU) with 12 billion transistors - probably only an electron microscope can reveal any individual component details. That's why I try to look at just vintage electronics. With any (digital)...
by siliconGary
Tue Apr 11, 2017 5:54 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: RF Test Chip Image
Replies: 13
Views: 1534

Nice image. Interesting to see a BGA die with die solder balls on prior to packaging. Unless you are involved with BGA packaging you would never see a die in this state. And RF die are always the best ascetically (IMO) as the inductors pop out and are the strangest of on-chip components (Simple at f...
by siliconGary
Thu Apr 06, 2017 11:09 am
Forum: Photography Through the Microscope
Topic: IC Die Photos
Replies: 12
Views: 2011

:? I think I can guess transistors and resistors, but I for one would like to see a few components pointed out, to be sure, if that would be possible? What's the diffusion used for resistors? Here you go http://www.photomacrography.net/forum/userpix/5891_trans31_2.jpg There are several diffusions u...
by siliconGary
Thu Apr 06, 2017 7:57 am
Forum: General Discussion Forum and Community Announcements
Topic: limits for image posting: 1024 pixels, 300 KB
Replies: 12
Views: 29412

Thanks for the explanation. No wording would help with the fact I did not read it carefully enough - I thought the limit said 350kB not 300kB ':oops:'