Technical Editor Paul Rako looks at analog technology in power supplies, interface, the signal path, and life in general.
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Blog
Monday, August 18, 2008
High-voltage low-noise converters, Jim Williams’ prototype pictures
Aug 18 2008 11:22AM | Permalink |Email this|Comments (12) |
I already blogged about Jim Williams’ new article about high-voltage low-noise converters. I forgot that I went over to LT a few months ago and got a picture of the prototypes Jim made for the article. Click on any picture to enlarge
This table shows the position of the boards in the picture and the figures in the article (pdf) that the board represents.
|
Figure 16 |
Figure 22 &24 |
Figure 17 |
Figure 1 |
Figure 20 |
|
AN118 - pg 18 Figure B13 |
Figure 4 |
Figure 11 |
Figure 5 |
Figure 8 |
Figure 1
Figure 1 detail
Figure 4
Figure 5
Figure 8
Figure 11
Figure 16
Figure 17
Figure 17 detail
Figure 20
Figure 22 and 24
Figure B13 from Linear Tech app note AN118
Here is Jim Williams holding his babies.
Related entries in: Analog |
Reader Comments
at 8/26/2008 1:31:38 PM, DigitalRacer said:
Looks like a three year old soldered it. DR
at 8/26/2008 1:31:49 PM, DigitalRacer said:
Looks like a three year old soldered it. DR
at 8/26/2008 2:14:40 PM, KE5FX said:
Don't knock it. I built an entire DC-1 GHz receiver that way. :)
at 8/26/2008 3:00:31 PM, KO6LU said:
Looks like one of my early radios as well !!!
at 8/26/2008 4:15:53 PM, PhilR said:
I''ve tested one of these a short while ago - while it''s not pretty - it performs flawlessly. I''ve made a few PCBs using a dremel to route out copper. Not the greatest looking, but when you''re in the moment you don''t want to wait (usually about 1:00AM in the garage). Jim is an engineers'' engineer!
at 8/27/2008 10:26:47 AM, EdwinP said:
Don't knock this rat's nest wiring, when you need to watch parasitics, particularly at high frequencies, this reaaly works! Jim Williams and Bob Pease had the same teacher for rat's nest wiring techniques.
at 8/28/2008 6:29:58 PM, Laxman said:
Rat’s nest is a result of necessary “Quick and Dirty" approach to implement and prove the circuit functions. White collars often find it difficult to appreciate. Its Jim’s good work!
at 9/5/2008 10:01:09 AM, RF TECH said:
DigitalRacer should display some of his own work for all others to review. These are PROTOTYPES... Duh! If it works, it works!
at 9/12/2008 3:21:51 PM, BAZ-man Jeff said:
Ah, the 70's. Nothing like dead-bug protos and production Engineering Changes
at 9/15/2008 11:32:12 AM, Tom W said:
I love it! Don (our tech at Nat Semi back in the early 80's) showed me a quick tip for using a dremel tool and double-sided copper clad boards to make up fast prototypes and a nice shielded box. Don's trick was to hide everything in a box, then solder screws to the corners so you could screw on a nice lid. Hey, my boxes looked nice. Ya, first job fresh out of college was working for the MOSA test group and push starting Bob's VW when we went to lunch (I learned why Bob invited me... I was the 'starter')
at 9/20/2008 1:46:43 PM, Arlie said:
Those prototype circuits of Jim's tell more truth about the circuit than a PSPICE simulation ever would! I'm proud to say I use the same techniques with great sucess.
at 10/20/2008 3:45:11 AM, zb said:
Yay! Bosses who don''t appreciate this art of breadboarding do not deserve any respect.
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