MJLorton Solar Power and Electronic Measurement Equipment Forum
Competitions and Giveaways => Competitions and Giveaways => Topic started by: MJLorton on July 28, 2014, 01:03:48 PM
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Hi folks,
This is the meter that is up for grabs:
http://www.brymen.com.tw/product-html/cata250/BM250_Catalog.pdf
(The meter for this giveaway is a factory recondition unit...but it looks like new with leads etc.)
If you want to buy one (Franky's Store):
http://www.ebay.com/itm/Brymen-BM257-Digital-Multimeter-6000-count-Brand-New-Fluke-alternative-/200922627340
PLEASE READ conditions / requirements to enter to this giveaway:
1) You need to have been a registered member of this forum from June 2014 or before.
2) You need to have made 5 or more reasonable contributing posts. i.e. "Tell me what I need to solar power my home"...does not count.
3) I will have the final say / judgement on points 1 & 2 above.
4) This thread and competition will be closed / locked at the end of August 2014 when the draw will take place.
To be entered into this draw, simply post a link in this thread to a technology related story / article (electronics, solar, etc.) that has really taken your interest.
Thanks to the kind gent that made the meter available for the giveaway.
Cheers,
Martin.
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Hello!
Good to be back! :)
I read this sometimes back in May and since then I'm following the development of organic material based rechargeable batteries.
Link: http://www.theatlantic.com/technology/archive/2014/05/the-organic-carbon-battery-from-japan-that-could-spawn-the-next-tesla/362112/
Cheers!
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I'm not much of a poster in this forum, I've commented more on Youtube when I felt I had something to contribute. There's few posts here but i think there should be 5 or more decent ones.
One of the tech stories that got my interest is a recent one about the development of a porous silicone oxide material that's very suitable for RRAM, the next thing after flash, which is used now in SSDs, usb sticks, sd cards etc etc: http://news.rice.edu/2014/07/10/rices-silicon-oxide-memories-catch-manufacturers-eye-2/
Tour and colleagues began work on their breakthrough RRAM technology more than five years ago. The basic concept behind resistive memory devices is the insertion of a dielectric material — one that won’t normally conduct electricity — between two wires. When a sufficiently high voltage is applied across the wires, a narrow conduction path can be formed through the dielectric material.
The presence or absence of these conduction pathways can be used to represent the binary 1s and 0s of digital data. Research with a number of dielectric materials over the past decade has shown that such conduction pathways can be formed, broken and reformed thousands of times, which means RRAM can be used as the basis of rewritable random-access memory.
RRAM is under development worldwide and expected to supplant flash memory technology in the marketplace within a few years because it is faster than flash and can pack far more information into less space. For example, manufacturers have announced plans for RRAM prototype chips that will be capable of storing about one terabyte of data on a device the size of a postage stamp — more than 50 times the data density of current flash memory technology.
Also, what's cool about this material is that if i understand correctly it's much easier to build long 'sheets' of such memory cells and create chips of various sizes out of them and reduce the waste making everything more cheap:
In the latest study, a team headed by lead author and Rice postdoctoral researcher Gunuk Wang showed that using a porous version of silicon oxide could dramatically improve Rice’s RRAM in several ways. First, the porous material reduced the forming voltage — the power needed to form conduction pathways — to less than two volts, a 13-fold improvement over the team’s previous best and a number that stacks up against competing RRAM technologies. In addition, the porous silicon oxide also allowed Tour’s team to eliminate the need for a “device edge structure.”
“That means we can take a sheet of porous silicon oxide and just drop down electrodes without having to fabricate edges,” Tour said. “When we made our initial announcement about silicon oxide in 2010, one of the first questions I got from industry was whether we could do this without fabricating edges. At the time we could not, but the change to porous silicon oxide finally allows us to do that.”
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Hi Martin,
As you know, I'm really interested in multimeters and contribute, behind the scenes, at modemhead's website.
http://mrmodemhead.com/
edit: found this site on aug 23
http://emperoroftestequipment.weebly.com/
PS. Since April 2014, I have been busy switching from Windows XP to Linux so most of my efforts have been reading linux and its electronic related news at
http://lxer.com/
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Hello Martin,
some years ago I was registered in this forum as "ProBang" since november 2012. If you still have the postcards from the giveaway (Mastech 8218) I can prove it. That is why I´m hoping, the first and second requirement are fulfilled.
I don´t want to post a link to a specific article of interest. It would be quite randomly and the grade of my interest is changing over the time.
Instead, I´m posting a link to a site that holds my interest since years:
www.kfz-tech.de (http://www.kfz-tech.de)
It´s a german website about car-related technology. Switchable to an english version. A big knowledge-base. Very recommendable.
Greetings,
Hartmut
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As with others i'm not too active on this forum - i mostly lurk and follow the youtube channel :)
I found this article on injection locking an RC oscillator interesting, as I mostly do audio-related projects:
http://staging.edn.com/design/analog/4400342/1/Injection-lock-a-Wien-bridge-oscillator
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Hi, I hope my recent forum name change doesn't confuse anyone too much, sorry about that!
As a hobbyist who is still very much a beginner I tend to wade through lots of electronics articles in my spare time; but an article I particularly enjoyed recently was one by the Radio Amateur Society of Norwich; which describes the fact that even fixed voltage regulators can actually be adjusted.
"did you know that all voltage regulators are adjustable? Yes, any IC voltage regulator can be adjusted to a higher voltage than its fixed voltage by just adding a couple of resistors"
http://www.rason.org/Projects/regulator/regulator.htm
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Hi Martin, thought you might be interested in the series of answers given by Bob Pease in his columns. He gave a lot of good info in an easy to understand way, and gave it and any maths in a way that most engineers and literate people could understand.
http://electronicdesign.com/author/bob-pease?page=0%2C0
Worth going back in tme there, the articles and the answers are very interesting, he even has articles on his climbing mountains in Nepal and how electronics was used there.
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This guy has made a really great product. That Iwas interested in, as I was gping to build my own. However his design was all that mine was gping to be. So I supported his kickstarter and purchased one. As Dummy loads are a usefull tool to have.
http://www.arachnidlabs.com/reload-pro/
Thanks you
Nick
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Lol
Thanks for the contest...
I have so many sites that help me out and will post one later for the contest ... Right now I have been working on finding more information as to building Ivan Whips in Iron man 2 ... Which has lead to a different path for another project but can't seem to find any info.. Well the idea came about 20yrs ago with a build of ray type of gun that but would be able to charge an object with a static charge but from a distant away with no direct contact.. Not sure if this was even possible or even safe to use .......
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While researching articles about Graphene and super capacitors I ran into this interesting article. There is a Lab that claims they have used Hemp fibers in the creation of materials that equal or exceed the properties of Graphene for energy storage. Quite interesting indeed.
http://www.laboratoryequipment.com/news/2014/08/hemp-may-beat-graphene-ideal-supercapacitor-material
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Like a lot of beginers, I was wary of switch-mode power supplies. When I decided I want to learn how they work (in detail), and how to fix broken ones, I started looking for documentation on this. There is info, but it's scattered all over the internet, incomplete etc.
These things helped a lot:
- Samuel M. Goldwasser's article - Small Switchmode Power Supplies (http://www.repairfaq.org/sam/smpsfaq.htm) (free)
- Jestine Yong's book - Troubleshooting and Repairing SMPSs (http://powersupplyrepairguide.com/) (39$ if you choose to buy it)
- Randy Fromm's video on Youtube (https://www.youtube.com/watch?v=rBZXqPgDNmo) (free)
The video has helped a lot even if the speaker concentrates on a specific type of arcade SMPS. A lot of these principles aplly in all power supplies. He skips some steps, make some assumptions, but in the end that's what beginers are fed in order to learn easily. I recommend you grab some popcorn and concentrate, there's a lot of usefull data.
Also, note his "microphone" - the camera is tracking his mike and he also has manual pan-tilt-zoom controll from the mike.
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Hi Martin,
How about a video on the operation of the serial connection , function, software and display of the data logger for the Bryman BM257 and commonality with other models?
Thanks Geeup.
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Oh here's my link
DC-DC converter, switching regulator
using LM2576, LM2575, LM2575, LM2576, LM2596, LM2678, LM22678, LM22675, and more.
http://www.siongboon.com/projects/2005-08-07_lm2576_dc-dc_converter/
Also
I play alot with
Pirate 4x4 -http://www.pirate4x4.com
weldingtipsandtricks.com
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Thanks to everyone that has entered. I'm closing the entries now and will do the draw soon.
Cheers,
Martin.
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I apologise for the delay in doing this draw. It will happen before the end of this month.
Cheers, Martin.
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Thanks to every one that entered for this draw. There were some really interesting links / articles.
As this giveaway was aimed at forum members I will announce the winner here first and then on the next T4D...which should be tomorrow or Wednesday.
The entry I drew was: Retiredcaps
Congratulations good man.
Please send me a PM with your address.
Thanks again to the kind gent and forum member that put up the prize for this giveaway.
The next giveaway will be one of the ISO-TECH devices I will show in the next T4D.
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Well done to Retiredcaps, hope he enjoys the meter you are sending him. Look forward to seeing that new video you are making.
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As this giveaway was aimed at forum members I will announce the winner here first and then on the next T4D...which should be tomorrow or Wednesday.
And here I was waiting for the T4D video and completely missed this on the forum? :facepalm:
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A big THANK YOU to whoever donated the BM257 as a prize for forum members! :D
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Congrats!
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A big THANK YOU to whoever donated the BM257 as a prize for forum members! :D
If I remember well, it is from Franky Tong aka "Iloveelectronics".
Congrats!
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[...] Look forward to seeing that new video you are making.
+ 1
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A big THANK YOU to whoever donated the BM257 as a prize for forum members! :D
If I remember well, it is from Franky Tong aka "Iloveelectronics".
No. It was a meter I put on an eBay auction, but it was another forum member who bought it and told me to send it to Martin :)
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No. It was a meter I put on an eBay auction, but it was another forum member who bought it and told me to send it to Martin :)
I think I know how that originated. I will have to search with the right parameters to find out.