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Instead of using Ferric acid, I used cupric chloride(?): hydrochloric acid (masonry/stone cleaner - from B&Q for 7 pounds) and hydrogen peroxide (boots for 94p). plus I used acetone for prepping/cleaning the board which is getting hard to get ahold of because 'acetone free' nail polish remover is all the rage. grrr.
Coca-Cola Zero 8 Hours of Suzuka 2013 on Thursday 25 July to Sunday 28 July 2013 in Suzuka, Japan
The Coca-Cola Zero Suzuka 8 Hours Endurance Road Race is a motorcycle endurance race held at the Suzuka Circuit in Japan each year.
The race runs for eight hours consecutively and teams are composed of two riders and one alternate.
Here you can see the SCAF chip, an LTC1060. From the NE QRP website:
``The integrated circuit at the heart of the NESCaf is made up of two CMOS active filters. These filters are extremely configurable (low pass, band pass, notch etc).
We have chosen to set up both filters as Butterworth band pass filters and to cascade the filters. Butterworth filters have the characteristic of constant amplitude in the band pass region, while the cutoff knee is not be as sharp as if the filter were configured as a Chebychev. We considered this an acceptable tradeoff, wanting constant volume out regardless of the bandwidth or center frequency setting of the filter.''
21.05.2014 w/ SBKTN, Circuit des Jeux, Ben Frost
Fotos: Alexander Klich
All photos are copyrighted. Please don't use without permission
Vintage circuit board w/image processing. Decomposed to CMYK, inverted the K channel, composed back into RGB.
Mon mari s'est vu offert par les collègues un essai sur ces voitures.
Gift for my husband (from his friends): try these cars!!
A very cool circuit board that I found in the trash. I think it came out of a VCR. I thought the texture of it looked really neat.
Again, this is from a circuit board that powered an LCD display for an HP inkjet printer.
Despite what appears to be a perplexing mishmash of lines, there's an actual method to this madness. These lines conduct electricity, and because they send data to the LCD display, the lines must get the data to the on-chip processor with no interference, thusly unlike traditional insulated wires, circuit board lines cannot cross each other. The circles you see near the bottom of the picture allow the data signal to safely transfer from one side of the circuit board to the other, and get past any electronic obstacles in its way.
The best objects to look for PCB line art are relatively old computer motherboards (such as those from the late 1990s and early 2000s) which have smaller parts and smoother surfaces, thus the pattern is better looking.
Some examples of projects using conductive thread and LEDs. More information at tinkering.exploratorium.edu/sewn-circuits
Cal CRUTCHLOW GBR
LCR Honda
HONDA
MotoGP
GP Valencia 2017 (Circuit Ricardo Tormo)
10-12.11.2017
photo: MICHELIN
Our boiler stopped working recently after getting filled with rain, and needed a new circuit board. The old one has been stuck in the kitchen since then and I am fascinated by how intricate it is.
I uploaded the CAD files describing my circuit board to a web site on the internet and clicked a few buttons. Suddenly in a state far away, robots spun to life, manufacturing my circuit boards. They arrived in the mail here at Caltech four days later. (I could also have asked the robots to solder in all the components, but I elected to do that by hand.)
A sufficiently advanced technology...
Specification
Gallery
PDF Download
DW17 Air Circuit Breaker Application
DW17 Air circuit breaker (DW17 series ACB)
Nominal current: 630 to 6300 A
Breaking performance: 42 to 150 kA at 220/415 V AC
Voltage rating: up to 690 V
1 single physical size from 630 to 1600 A
A single pole pitch of ...
"While she fucked around a lot this summer, smoked a ton of weed from her pipe named Carlito and was generally a lazy PA", explained Marty Derbyshire from Bluff to The Circuit, "She was also a real asset to the creative team" - So go grab some soft serve, fuck a shit brick and enjoy the latest issue of The Circuit.
S.D., welcome to The Circuit.