Advertisement
Blogs
Subscribe to Blogs
View Sample

FREE Email Newsletter

So, which PWM technique is best? (Part 7)

April 20, 2012 1:26 pm | by Dave Wilson, Motion Products Evangelist, Texas Instruments | Blogs | Comments

So, which PWM technique is best for your motor control application?  There are certainly plenty of options to choose from, with each one exhibiting unique advantages as well as disadvantages.  In this final blog on this topic, let’s conclude with a discussion on regeneration for both DC and AC motors.

A beauty

April 20, 2012 11:18 am | by M. Simon | Blogs | Comments

The picture is of a board I had made by the DorkbotPDX board service. It is a beauty. The gold plating is not guaranteed but depends on what others who use the service pay for. Dorkbot puts a number of boards on a panel in order to get a pretty good price.

Can Neil Young's studio-quality audio format curtail music piracy?

April 19, 2012 4:52 pm | by Ron M. Seidel, Editorial Intern | Articles | Comments

Young, who has been releasing albums since the 1960s, has his own ideas about innovating the way we consume music. In June, he filed six trademarks with the U.S. Patent and Trademark Office for names involving a new high-fidelity audio format. It appears the 66-year-old is on a crusade to bring the full sonic capacity of studio master recordings to the digital frontier.

Advertisement

So, which PWM technique is best? (Part 6)

April 17, 2012 9:25 am | by Dave Wilson, Motion Products Evangelist, Texas Instruments | Blogs | Comments

So, which PWM technique is best for your motor control application? Hopefully by now you have seen just how versatile the PWM process can be, and how subtle changes in this process can have a dramatic effect on motor performance. In the previous blogs on this topic, I have only discussed the techniques as they apply to DC motors in an H-Bridge.

The human price point for electronics

April 16, 2012 9:51 am | by Chris Warner, Executive Editor | Articles | Comments

“Americans will buy American products when they’re willing to pay for American work.” Those words came from one of my PR contacts a couple of years ago as we discussed bringing manufacturing jobs back to the U.S. While a return to those standards seems light years away, a more pertinent question we should ask ourselves is “what price are we willing to pay to reclaim our humanity?”

Resource One

April 13, 2012 9:31 am | by M Simon | Blogs | Comments

I was looking around the 'net and came across the name of someone who worked on the design of Resource One. I logged on to Resource One in '74 (it was part of a hitch hiking trip with my girlfriend, and still wife, from Carbondale, Illinos to the West coast). There were 12 terminals around the Bay Area hooked up to an old SDS mainframe by modem.

Improvement needed for controversial full-body scanners

April 12, 2012 4:46 pm | by Ron M. Seidel, Editorial Intern | Articles | Comments

Recent developments have put into question the true capabilities and benefits of full-body scanners, the controversial devices that use what the Transportation Security Administration calls “advanced imaging technology.” One wonders if officials in Washington, having adamantly defended the scanners for years, might just be too stubborn to concede the equipment’s ineffectiveness.

So, which PWM technique is best? (Part 5)

April 12, 2012 11:12 am | by Dave Wilson, Motion Products Evangelist, Texas Instruments | Blogs | Comments

So, which PWM technique is best for your motor control application?  By now you have probably surmised that there is no “one” PWM technique that is the best for all applications.  But the technique we are going to discuss today comes pretty close.  It's called the Unipolar 4-Quadrant PWM Technique (Form II)...

Advertisement

So, which PWM technique is best? (Part 4)

April 10, 2012 3:27 pm | by Dave Wilson, Motion Products Evangelist, Texas Instruments | Blogs | Comments

So, which PWM technique is best for your motor control application? Up to now we have investigated three different PWM techniques. Some could regenerate energy back into the DC power supply, and some couldn’t. But they all had one characteristic in common: unipolar voltage waveforms.

The Tinker's Toolbox -- Chad Hall of Ioxus

April 10, 2012 8:54 am | Podcasts | Comments

The Tinker’s Toolbox is the Advantage Design Group’s web-based interview show where we talk about the latest technology, components, design, and systems integration issues for the electronic design engineering community. In this edition, Alix Paultre, formerly of ECN, chats with Chad Hall of Ioxus about power quality issues.

So, which PWM technique is best? (Part 3)

April 5, 2012 6:17 am | by Dave Wilson, Motion Products Evangelist, Texas Instruments | Articles | Comments

So, which PWM technique is best for your motor control application? So far we have studied two motor drive topologies that result in unipolar PWM voltage waveforms on the motor, but are incapable of providing any braking for the motor in the event you want to decelerate quickly.

New rumors of smaller Apple tablet continue to surface

April 5, 2012 5:42 am | by Ron M. Seidel, Editorial Intern | Articles | Comments

Stories about an “iPad mini” started receiving attention March 13 when 9to5Mac posted a link to a Korea Times report in which an unnamed Samsung official told the newspaper that Apple will be building a 7.85-inch version of the iPad utilizing Samsung displays.

So, which PWM technique is best? (Part 2)

April 3, 2012 12:25 pm | by Dave Wilson, Motion Products Evangelist, Texas Instruments | Blogs | Comments

So, which PWM technique is best for your motor control application? In the previous blog, we examined the single-quadrant PWM technique, which is a good fit for extremely cost sensitive motor control applications where you want to control the motor’s speed...

Advertisement

Hungry? Press the emergency pizza button

April 3, 2012 12:15 pm | by Jason Lomberg, Technical Editor | Blogs | Comments

In this era of instant gratification, an emergency pizza button ranks somewhere between the invention of sliced bread and the printing press.

So, which PWM technique is best? (Part 1)

April 2, 2012 11:17 am | by Dave Wilson, Motion Products Evangelist, Texas Instruments | Blogs | Comments

So, which PWM technique is best for your motor control application? In case you haven’t guessed, this is somewhat of a trick question. It’s kind of like asking “which ice-cream flavor is the best”, since everybody knows that the answer is obviously “chocolate chip.”

Number nine

March 30, 2012 4:57 am | by M. Simon | Blogs | Comments

A while back I wrote up how to make A Perfect Divider which divides a voltage by 10, 100, 1,000 etc. using mostly very common resistors (100K, 10K, 1K etc.) with only two uncommon resistors to make a resistance divider that divides by decade increments.

The Tinker’s Toolbox – Jeff Klaus of Intel

March 26, 2012 12:35 pm | Podcasts | Comments

Tinker’s Toolbox returns to the data center with Jeff Klaus, Director of Data Center Solutions at Intel. Workload, power consumption, thermal management and energy efficiency are always concerns in the data center, and Jeff will

Touch screen market to reach $14 billion in 2012

March 23, 2012 6:00 am | by Cathleen Thiele, Technology Analyst, IDTechEx | Blogs | Comments

IDTechEx forecasts the touch screen market to reach $14 billion in 2012. The biggest application for touch screens in general, and projected capacitive screens in particular, is mobile phones and, right behind, tablets.

Tips Help Engineers Write Well -- Part 2

March 21, 2012 1:26 pm | by Jon Titus, Senior Technical Editor | Articles | Comments

A conclusion at the start of a report and the active voice improve engineers' written communications.

Design with your eyes on the road

March 21, 2012 6:57 am | by Chris Warner, Executive Editor | Articles | Comments

The other day, I received a press release from a company that announced plans to apply its technology to the automotive space. The memo cited research from Strategic Analytics which predicts a 10 percent compound annual growth rate in the market for the next five years.

From prototype to volume

March 19, 2012 5:18 am | by M. Simon | Blogs | Comments

David Jones has a very good video up on YouTube about how to go from a working prototype to high volume manufacture. The video is a bit over 50 minutes long so be prepared to put some time in. The information is oriented to the novice...

Forth is getting institutionalized

March 16, 2012 5:42 am | by M. Simon | Blogs | Comments

GreenArrays, a company I have written about extensively is opening an on line institute for those who want to learn more about how to program and use their chips. They call it the Array Forth Institute. First time log-in is fast and simple.

EC Working on Regulations for Commercial UAV Use

March 14, 2012 6:09 am | Blogs | Comments

Working hard to catch up to the rest of the world, the European Commission's Unmanned Aircraft Systems Panel began meetings February 9 in Brussels, Belgium, to agree on the key flight rules and technologies for commercial UAVs

Driving next-generation medical devices

March 13, 2012 7:14 am | by Alix Paultre, GlobTek, www.globtek.com | Articles | Comments

Electronic bone healing technology has been around for a while but has increased in popularity as electronics technology enables increased functionality in significantly smaller form factors. The need to integrate advanced functionality into a small device also creates

TI industrial control training comes to Boston!

March 13, 2012 6:47 am | by Dave Wilson, Motion Products Evangelist, Texas Instruments | Blogs | Comments

This blog is for all you control engineers up there in the New England area. The TI Industrial Control training event is coming to Boston on Tuesday, March 27th through Thursday, March 29th. We did this about a month ago in Chicago...

X
You may login with either your assigned username or your e-mail address.
The password field is case sensitive.
Loading