HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
laserdudephil
User Rank
Iron
Nice!
laserdudephil   9/28/2011 3:25:41 PM
NO RATINGS
Thanks Rob,

    I use a similar circuit to turn on a shopvac whenever any woodworking tools are turned on for dust collection.  It was built from an 30 year old Radio or Popular or Elementary Electronics magazine article (was that yours?.)  Is that a Klipsch in the background?

armorris
User Rank
Platinum
No, it came from my own futile little mind
armorris   9/28/2011 10:42:12 PM
NO RATINGS

No, I created the original version of this gadget back in 1973 entirely on my own. The updated version is also entirely my work. Up until I saw a Sears unit for power tools in 2003, I had never seen or heard of such a thing before. I have already emailed the editor about the SCR mistake. I don't know where he got that from. I took for granted that everyone who would be interested in building the gadget would know what an SCR was.

Jluminais
User Rank
Silver
Re: No, it came from my own futile little mind
Jluminais   9/29/2011 10:08:10 AM
NO RATINGS
If you google SCR, the term Selective Catalytic Reduction occurs right after the Wikipedia article on Silicon Controlled Rectifier.  I suppose the term Selective Catalytic Reduction sounded cooler.

BradLevy
User Rank
Iron
Correction
BradLevy   9/28/2011 3:50:28 PM
NO RATINGS
It would indeed be very unique if it actually used a "Selective Catalytic Reduction" voltage regulator. With better editing, I think the article would have stated more correctly that it uses a Silicon Controlled Rectifier voltage regulator.

RoboKaren
User Rank
Silver
Looks great!
RoboKaren   9/29/2011 9:24:12 AM
NO RATINGS
Looks like a very nice design! I was going to make my own using a hall effect sensor, a PICAXE micro, and a relay. The use of a MPU gives a bit more flexibility in programming the  current sensing sensitivity and delayable on-off period. 

Karen

Jason
User Rank
Gold
Re: Looks great!
Jason   9/29/2011 5:10:01 PM
NO RATINGS
If you do decide to create this using the PICAXE, please share the design with the rest of us!

Tim
User Rank
Platinum
Great design
Tim   9/29/2011 7:10:29 PM
NO RATINGS
This a great compact design.  It is great to apply your work career into your home life.  Good job.



Partner Zone
Latest Analysis
2016 engineering grads can expect to earn an average salary of $65,000 right out of the gate. Petroleum engineers' wallets are much fatter, though -- they are expected to earn about $20K more.
3D printing is now adding value to manufacturers at all steps along the business value chain. Come find out how at a talk by John Jaddou at next month's Embedded Systems Conference in Minneapolis.
From IoT and M2M to flexible robotics and consumer HMI, the advances in smart manufacturing are being deployed on the packaging floor.
These new 3D-printing technologies and printers include some that are truly boundary-breaking: a sophisticated new sub-$10,000, 10-plus materials bioprinter, the first industrial-strength silicone 3D-printing service, and a clever twist on 3D printing and thermoforming for making high-quality realistic models.
Ear-based heart-rate monitoring gained momentum recently, as sensor maker Valencell Inc. announced it has licensed its biometric earpiece technology to Samsung Electronics Co. Ltd for use in so-called “hearable devices.”
More:Blogs|News
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Aug 8 - 12, Getting Hands On with Arduino Mechatronics
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7 | 8 | 9 | 10


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Technology Marketplace

Copyright © 2016 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service