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Hello from Gold River.

Iron

LED illumination at devices

LED / solar / flashlight

On page 3 it seems that switch is discussed backwards

some basics of slides and computers. when sound is not synced to pages, Put page numbers on the slides.

Iron

Carol couldn't get a word in edgewise!!!  Otherwise, I enjoyed the presentation.

Iron

Buck refers to bucking up or cutting current (like bucking up firewood).

Iron

Watch the presentation on 07/23. 

Carol has prepared a good topic, but unfortunately the host, Alex spoke more than Carol did throughout the entire presentation. And I could not believe that Alex were eating while hosting the class.  

I hope the next class Alex would conduct himself more professionally.

Iron

Too much interruption

 

Iron

Harware and software. Manage projects.

Late to the party but these seminars look good and practical.

Iron
Custom Coach Interior Installation
Iron

Have not used LEDs in my desigh ..have supported customer designs.

Interested in low power personal lighting, for bicycles etc...

System engineer. Low power personal lighting

Thank you for the presentation. 

I agree with Ran about the issue in slide 3. The words "open" and "closed" should be switch to make sense of the bulleted items. For example, when the switch is closed the diode cannot "turn on" having 12V in the cathode and ground on the Anode. Just pointing it out so there wouldn't be any confusion. 

Iron

I'm a controls systems integrator/designer. Want to learn how to utilize LEDs in entertainment lighting systems.  Thanks Carol.

 

Iron

very interesting track

Iron

Concerning the terms BUCK and BOOST in SMPS...  The central component of the SMPS is the inductor, and, counter to its cousin, the capacitor, the inductor is basically a current-operated device.  (The capacitor, on the other hand, is a voltage operated device.)  In the SMPS design wherein the output voltage is less than the input voltage, the inductor must "BUCK" the incoming current to reduce the output voltage to the desired level.

In the case of an SMPS having an output voltage higher than the input voltage, the inductor (by means of the callapsing magnetic field and the resulting current at input current cessation) must "BOOST" the input voltage to the desired higher output voltage.

Hence the terms "BUCK" and "BOOST."

I hope this helps.

Iron

Missed the live session today but I caught the archived replay, It's  a good brginning. I'll miss tomorrow as well but be live Wednesday,  I am a job searching Electronics Engineering Techbician pursuing new technology and this looks like a good place to start.

Iron

On slide 3 in the writeup on the right side, it appears the words "swith is open" and "switch is closed" are wrong in the first two bulleted items.  For example, in the case of the first bulleted item, if the "switch is open," NO ENERGY WILL FLOW from the battery.

Iron

Double Insulated: Double insulated appliances are products that have been designed in a way so as not to require a safety connection to electrical earth.  Typically,it's that third prong on the power cord plug.  The basic requirement is that no single failure can result in dangerous voltage becoming exposed so that it might cause an electric shock, and that this is achieved without relying on a connected-to-earth metal casing.  This is usually achieved at least in part by having two layers of insulating material surrounding live parts or by using reinforced insulation.

Iron

@dgutierrez - MTTF = Mean Time To Failure.  MTBF = Mean Time Before Failure.  The difference between the two is primarily that the MTTF involves a system or component failure that cannot be repaired.

Iron

@Alex - My interest this week would be to learn more about the state of this technology.  There seems to be a lot going on with HBLEDs and sometimes lots of them.  Therefore, the power supply reqs. can be intense.  Configuration of the LEDs is also important as well as the choice of LEDs.  There is much to know.

Iron

Good basic presentation with good factors to consider in a design. There are many higher power applications to consider.

Buck and Boost comes from power supply terms. Boost to get a higher voltage than the input. And Buck when the output voltage is lower than the input.

Electrical Engineer

 

@PGGraham, she can't stick around all day.

Iron

Andre Piotrowski -  Senior Electricla Service Engineer -

Iron

I have to say I'm a little disapointed that she hawks her business and then stops answering questions, Several of which I'd love to hear the answer to.

Iron

Used a chain of LED strips in series and experienced flicker.  So I'm interested in solving flicker if possible.

Iron

THanks, good presentation

Iron

I was able to catch a few very interesting tidbits though

I'll have to pick up the beginning and look forward to tiommarrow

Unfortunately I had audio issues and missed the beginning of the discussion.

There are lots of great applications. It's great to see the diversity of LED applications. My co-author Ron Lenk is the expert on switch mode PS. He wrote a book on Practical Design of Power Supplies by Wiley. He's also available for consulting, as am I. Please contact us at      sales  at   reliabulb  dot  com.

Blogger

Any standard for LED dimming in the future?

 

To Answer Alex, the indicator LEDs are generally 100 mW. At that level you just use a resistor in series to get the right current.

Blogger

Hi Alex - can you tell us how to access our certificates (showing the Continuing Education Credits)?  Thanks.

Iron

"Is there a reason there are 3 serial LED's in slide 11? Can you use this configuration in any way you want (serial, parallel, bridge, etc), or this is the standard convention?"

Just to show higher voltage to demonstrate Boost. They are generally in series.

Blogger

Thank you, Carol -- I'll have to return later.

Platinum

"Why THD is not important for US market?"

Tradition. Just not regulated in the US.

Blogger

"n the HV9910 Demo slide you mentioned the efficiency is 85%. What efficiency are you referring to? Poewr to LED input only or optical efficincy as well?"

Pin and Pout for power supply only. BTW they can be hard to measure because of the high frequency. Only research people use optical efficiency. LED people talk about efficacy, lumens/W.

Blogger

Why THD is not important for US market?

Just for curiosity -- is it possible to get a summarized chat transcript (or is that part of the web archive too?), as there are a significant amount of gold nuggets in there.

Platinum

"How much would you derate an electrolytic?  Eg - if you had a 50V circuit application, would you utilize a 75V cap for a consumer lighting application, or would you go up to 100V?"

If you are sure the circuit never goes above 50V (even during lightning, when LEDs are in cold environment, etc.) then 63V is fine. Spend the money on higher temperature rated components.

Blogger

I assume we might get into some of the high-intensity LED chips (the size of surface mount capacitors) later this week?? THAT is one thing on MY agenda.

Platinum

Carol, are laser diodes driven in the same way as LEDs?

Iron

@luizcosta, You are welcome.  Yes, their demos are pretty cool.  And the lightbulbs are the mesh network, so it would be easy to add sensors to the mix to detect occupancy and set lighting accordingly.  Adding RGB leds would make for even more customizability.  

Iron

do you see these LEDs in machine vision applications?

 

Blogger

Thank you Carol and everyone.

Iron

"Are the demo circuits you provided applicable for any sort of LED including super efficient III-V LEDs? or just commerical ones?"

All LEDs InGaN, InGaS need similiar drivers.

Blogger

Thanks Carol - I look forward to tomorrow's presentation.

What about touch-detection in "Table" type applications -- does that tend to have a timed, perhaps pulse-coded output from each emitter to simplify decoding where a detector is getting signal from??

Platinum

: Thanks! This is cool stuff. I can see wireless dimmers coming to life.

Iron

"Carol - Does the inrush handling requirements change depending on the nature of the dimmer control?"

Basically no. When triac turns on every cycle, there's a rush of current. This is slightly different than in-rush that happens only on turn on. All triacs have this problem.

Blogger

@luizcosta - look at NXP's smart lighting solutions, they include an ARM processor with a wireless radio in each light to make a lighting network.  Each light has an IP address.

 

http://www.nxp.com/campaigns/greenchip/smartlighting?ecmp=Adwords_Greenchip_NA_Smart_googlesem620d0005&gclid=CLDw277q7q8CFaYaQgodqibz2w 

 

Iron

What about the bar LEDs?

Iron

i remember using tps61040 a while ago as a  booster

Iron

@Carol - I'm interested in design parameters for heat sinking high brightness LEDs (SMDs) such as the current crop of automotive headlamp DRLs or "angel eyes".  What materials and how to mount the LED to them?

I'll cover that tomorrow.

Blogger

ECE Instructor of Digital circuits.

Iron

Wow, I'm kind of overwhelmed with the number of posts. I'll try my best to answer them.

 

Do the Smart Meters adjust for the Power Factor Correction any better than the old style Power Meters do?

TIA

IRON

Residential meters don't measure VAR, commercial meters do. I don't believe smart meters are any different.

Energy star does require 0.9 PF.


Blogger

@Carol: any one using ebedded systems in LED lighting? Still overkill?

Iron

@Carol - I'm interested in design parameters for heat sinking high brightness LEDs (SMDs) such as the current crop of automotive headlamp DRLs or "angel eyes".  What materials and how to mount the LED to them?

 

Gold

Thanks, Carol.  I enjoyed the session.

 

Iron

Your feelings about COB lighting LEDs vs. Incandescent with regards to cost and efficiency?

Iron

Carol - Does the inrush handling requirements change depending on the nature of the dimmer control?

Thanks for the session Alex and Carol! 

Iron

Thank you Carol and Alex

Iron

Are the demo circuits you provided applicable for any sort of LED including super efficient III-V LEDs? or just commerical ones?

Iron

7 segment displays will never die.  WAY easier to interface and WAY cheaper than an LCD.

Iron

thanks for session Carol and Alex

Iron

Thanks Carol - Looking forward to Hight Brightness and Network/Building lighitng sessions.

@ steven - check the caps datasheet regarding derating, and you will find out how much or far you can/want to go

Iron

@Steven  Look for the rated hours of the cap at the temperature.  Cap life gets cut in half for every 10C rise in temp.

Iron

Thank you Carol

 

Iron

Is it the end of road for 7 segments with so many LCD screens being everywhere around?

Iron

Thanks for the very informative talk!

Thanks, good presentation

Iron

Thanks Carol and Alex. See all tomorrow. Time to earn my keep.

Iron

@Steven - depends on the ripple.

Iron

Wow. If you lose contact with the page, you have to wait for the ENTIRE chat session to reload... Auugh!

Platinum

Thank you Carol.  Bye.

Iron

thanks. good presentation.

Thanks, that was a helpful lecture.

Thank you for an informative first class.

Iron

Thank you for the wonderful presentation Carol

 

Iron

Good presentation.

Iron

Carol,

Do the Smart Meters adjust for the Power Factor Correction any better than the old style Power Meters do?

TIA

Iron

Thank you Carol!

Iron

thank you Carol,

Iron

Hi Alex - can you tell us how to access our certificates (showing the Continuing Education Credits)?  Thanks.

Iron

thanks Carol for a great presentation. thanks alex.

Iron

how plastic filters affect the light output and the color

 

 

Iron

How much would you derate an electrolytic?  Eg - if you had a 50V circuit application, would you utilize a 75V cap for a consumer lighting application, or would you go up to 100V?

Iron

@ luizcosta - type it

Iron

@luizcosta - you just start your message from @ sign... to draw that person's attention....

Iron

In the HV9910 Demo slide you mentioned the efficiency is 85%. What efficiency are you referring to? Poewr to LED input only or optical efficincy as well?

Iron

Any paired emitter/monitor-feedback devices out there to simplify setup requirements for constant output devices?

Platinum

Very curious to hear about how power and LED life is managed in smart phone LED flashes.

Iron

FOLKS: What do you do to post a question to somone in the chat: the one which starts with @name?

Iron

Mean Time To Failure

Iron

Can drivers in retrofit LED Light bulbs be designed to not be impacted by leakage in conventional "leaky" AC timers used in home lighting? Pittfalls/disadvantages?

Iron

@edeanda - google what you want to find out.   at least for EMI, depends from where do you want to start to suppress it (board, outside the board, case, outside of it, cab;es, etc).

 

Iron

Cheap electrolytics... predominant infant-failure mode for most "inexpensive" motherboards.

Platinum

i notice that many motherboard manufacturers advertise Japanese capacitors because of the probelms you allude to, Alex.

Blogger

@dgutierrez - mean time to failure

 

Iron

for rust you have to do a PCB with conformal coating...

Iron

@Carol - How long does a LED last ? I heard not less than 80% of its initial luminance after 100 years of use - is that true ?

Iron

Why THD is not important for US market?

RFI becomes an issue as soon as you start doing anything exotic to control pulse-rates for whatever reason. Makes a wider-range emission-control device necessary...

Platinum

@Alex - can hear you chewing something...

Iron

Color shift during dimming and phase shift of I, E.

Iron

UL safety, outdoor voltage is lower than indoor apps

 

Iron

PLEASE ENTER YOUR QUESTIONS FOR CAROL.

Blogger

Carol can you please provide some references on EMI and UL ?

Iron

@flared0ne - M$ gives PPT reader for free...

Iron

What are the ranges of output avaialble from current LEDs and what typically limits them? 

For slide presentations, check out OpenOffice.org for the freebie access.

Platinum

you still have to be able to change it!  This is a problem with the automotive industry.

Blogger

Will we get into consideration of the "flash" LED used on the iPhone, for example?? People can use that as a flashlight, too. And battery power limitations stack up quickly.

Platinum

@luizcosta: My workaround for missing slide numbers has been viewing the PowerPoint in Normal View instead of slide show so that the numbered slide thumbnails appear to the right with the current slide highlighted.

Iron

@bobybacs see write up on my website www.w9xt.com  - follow to electronics projects & contact me through that.

Iron

Apps - interested in these Drivers (as well as LED Zeppelin of course).

Iron

this might be for a machine vision application where you want very specific light output.  LED's might be a good fit since these systems might be on all the time.

Blogger

PCB diagnostic indicators and backlights, mostly.

Iron

since electrolytic caps are the weakest link, what options do we have to improve life of design?

Iron

Persistence of vision is cool -- maybe we'll get into a sequential buffer output device to display text, etc, only while in motion (like those clock displays that you only see the time output while the display wand is "ticking" in a repetitive arc.

Platinum

@garysxt: I'm interested too to use LEDs for aquarium lighting, can we discuss more details on mail or chat ?

Iron

SLIDE NUMBERS: Presenters have yet to include visible slide numbers, which makes it difficult to follow back and forth.

Iron

There is an evaluation board in digikey website pn CLA367-ND, which is not the one you show on the ppt, could you let me know why the high cost of this board?

Iron

Used and will use.

Iron

Mostly personal projects. 

Platinum

persistence of vision is also a great way to see flicker, just scan across the source and see a row of dots.

Iron

yes in the past .   Not sure about future.

Iron

We are interested in  building LED lighting projects using AC and working with PICs to control the display.  Have set up one circuit with opto and triac and seems like it will work.  any white papers or web links would be appreciated.

Yes, every board has LEDs on it.

Iron

Yes I am currenlty designing and using LED's

Iron

I have been playing around with LED lighting of my aquariums as a personal project.

Iron

I used and supertex chip was the best.

Iron

Never used any LEDs.  Possible within the next year.

Iron

Have used, plan to use in future

Most interest is in commercial lighting as an energy conservation application - including dimming applications

Iron

Used very simple LED control circuit for oximeter circuit. Would like to upgrade it

Iron

We are using LEDs as low voltage interior lighting

 

Iron

yes, in the past year and also in the next year.

Iron

We currently use LEDs for indicators and backlights. We also use many simple switchers for powering our controls.

Iron

@Alex - Used LED's as PCB status indicators.  Will continue other projects with same.

Iron

We sell LEDs and LED assemblies with additional circuitry and power sources.

 

Iron

Use: Definitely used as state indicators, but not for real lighting lately. A few years ago for a backlit sign panel conversion from fluorescent. 

 

Iron

Yes, have.  Yes, will.  Examples are good, but some comparison chart of driver solutions would be terrific.

Iron

@Alex: Just status LEDs on processor cards etc.

Iron

I use LEDs in hard models and prototypes

Iron

Yes - LEDs both as indicators and control of lighting.

I used LED while teaching basic digital electronics at the University.

Iron

tactical lighting, 350Ma LED

 

Iron

Have used on two projects

Iron

I am planning to design a Headlight applications in the next 6 months

Iron

I am working on a boost-based LED module right now.

@Alex - been using LEDs before, using them now and will be using in the future...

Iron

Plan to use LED in lighting control systems

 

on slide 11 - L1 value depends of the current through LEDs

Iron

Have used LEDs an will use LEDs, as well as Driver chips.

Iron

Literally thousands. potentially tens of thousands...

Iron

Not within the last year but plenty earlier.

Iron

yes, high power 120mA LED backlight LCD

Iron

Have used and have plans for use in very near future.

Iron

Yes, have & will

Iron

I have, I am, and I plan on using LEDs.

Iron

yes - have used LED's in simple circuit in lab

Iron

Yes, I am a user.

 

Iron

planing in next year

Iron

@Alex - h/w and s/w

Iron

@slk, many reasons for growing indoor. recreation or survival.

Iron

Is there a reason there are 3 serial LED's in slide 11? Can you use this configuration in any way you want (serial, parallel, bridge, etc), or this is the standard convention?

Iron

@alex, I fondly remember hot chassis.

Iron

@ danlafleur - i know, ... just kiding

Iron

fuse not needed, everything works perfectly.

Iron

@slk, just thinking of maintaining food supply... not anything else.

Iron

Illumination of an experiment of crystal formation

Iron

displays, and LED lighting, personal and possible industrial applications

Iron

@ danlafleur - take care with the "indoor growing" ,  :)

Iron

Lighting applications.  Commercial, industrial, signs, etc.

Iron

Buck-eyed peas ?

Iron

Apps: High power LED lighting, small protable designs.

Iron

it's an archaic term, but it is used a lot

 

Blogger

General interest in efficient LED lighting.

Iron

Job: Mechanical Design Engineer, interfacing a lot with electronics.

Iron

Very low cost led lighting, LED signs and special effects applications

Iron

Welcome Carol.

Iron

solar or other alternate energy powered lighting is an interesting application. daylight spectrum for greenhouse and indoor growing.

Iron

multiple lighitng applications, residential and industrial

Iron

APPs: Use of embedded systems in SMPS + LED 

Iron

@slk - interlaced or progressive ?

 

Iron

General information

 

Iron

SW control of LED lighting.

How about a commercial?   :)

matrixing leds for light shows

Iron

Many people can see 60Hz.  Especially out the corner of the eye.

Iron

we lost her

 

Blogger

@ jsp - try to change the refresh rate for your screen and check it out

Iron

interested in general presentation of most all apps

Iron

General information

Iron

I believe the resistor should be 410 mOhm, NOT .1 mOhm

Iron

i can see 60 hz.  it drives me nuts looking at led xmas lights

Iron

Doubt that eyes can see 60Hz, perhaps <16Hz,

Iron

what is max system efficiency when driving LEDs?

Iron

It's called "buck" becaus it choppes up the incomming current like firewood I do believe. Rod.

Iron

"buck" is an archaic term coming from many many years ago with higher power radio circuits; it does have a logical source, just don't have it on the tip of my tongue.

Platinum

Buck and boost modules can be purchased from many IC vendors.  Buck reduces voltage, boost increases it, there are others like Buck-Boost, SEPIC that can increase or reducuce voltage... 

Iron

what are the different topoloies of SMPS buck and boost and what Buck is more used?

 

PROBLEM: my slides don't seem to be complete. Don't see complete diagram on the SMPS slides.

Iron

General interest, but currently rejigging a low heat fluorescent fitting to work with an incandescent dimmer (no SMPS, just a chain of LEDs off a bridge rectifier)

It's a buck, coz it "bucks" the input voltage

Iron

Buck is step down. Boost is step up.  Buck/Boost does both.

Iron

Buck converter is a varient of a flyback that has a partular topology.

 

I work for Xylem where I design Motor Control Electronics and also design power supplies and LED devices as hobby

Iron

@ mazianlab - you canuse whatever voltage you want or have in your app, but you need to chose acordingly the power supply topology, driver, etc

Iron

looks like a current regulator circuit/constant current in slide 4.

Iron

MikeR Unemploed Electrical test Engineer.  Interested in intensity controll techinques for LEDs, and just for what is out there.  Thanks for presentations

 

Iron

Mostly software in embedded application. RTOS.

Iron

QA in Electrical Security and wanting to learn more about LEDs as I have used them for Arduino projects

Iron

I am mostly interesteed in learning more about efficiently driving LEDs at high brightness.  Would like to design outside lighting using LEDs. 

Iron

@ richwilliams - no, but depends on your driver

Iron

Right now, searching for a position; typically I'm a small-company R/D project/proto/product engineer.

ALSO, for anyone else who may be having problems gettting the audio feed, try Chrome. This is the first time I've HEARD anything from your lecturer(s).

I'm assuming there might be something fresh and remind-ful communicated. And hoping later for good info on high-brightness small formfactor devices.

Platinum

Is this just an example or 12V is a normal power supply? It seems too high.

Iron

Swichting frequency is usually fix at values greater thsn 16kHz so it can´t be heard

Iron

Engineering Manager, general interest

Iron

interested in details of current sources for LEDs, plus some typical LED characteristics.

Iron

Looking for information on driving and controlling tri-color leds.  Advantages and disadvantages common anode vs common cathode

Thermal packaging considerations and implementations for lighting devices

Iron

Hi, I do custom hardware and software, mostly in custom mobile and aerospace industries. I am a project Manager, trying to opdate andrefresh my basic knowledge.

Iron

LED is next lighting trend and looking for background for control aspects on LED lighting.

@Alex - HW/SW/FW

Iron

General interest on LED lighting.

Iron

Senior Electronics Design Engineer

Iron

Looking for most efficient way to drive a small string of LED's for LCD backlight from Alkaline or NiMH batteries.

 

Iron

LED light dimming interfaces, Waht are types and categories?

Douglas Alexander - Component Engineer

How is a COB array powered?

Iron

Semiconductor process engineering background. Interested in SSL and challenges faced in implementing LED-based lighting

Iron

Just looking for LED general interest & basic coverage

Iron

Engineering Manager

Iron

Hello Carol, and Alex. Hi all.

Iron

Need a refresher on LED's

Iron

If the PWM duty cycle is small, how much overdriving the current vs pulse duty cycle

 

Iron

Hardware ENGINEER

 

Iron

Just looking for general info on LEDs.  No hot issues...

Iron

top interest right now is high intensity/efficiency lighting for greenhouse/ agricultural applications.

Iron

Hardware

tjuell

 

Iron

civil servant at European Parliament

Iron

What version of PowerPoint do I need for this slideshow?  I have 2007.

 

Iron

Electronics Engineer

Iron

Driving LEDs with 120vac.

Iron

Custom Coach Interior/LED lighting

 

Iron

Harware/software/firmware/management - general information

Iron

Psychedelic Lighting devices.

Iron

High Brightness LEDs

Iron

Lead Designer and packaging eng

Iron

LED Backlighting

Iron

Hardware  Engineer

Iron

just here for general interest

Iron

what is the curley component in your diagram

Iron

H/W engineering Technician

 

Iron

Graduate profesor

 

Iron

@ShaoloLLC- Black or white? Or just Sistem On Chip Design? :-))))

Iron

HW Design Engineer

Iron

I've tried Starbucks before but I don't know of any nearFairbanks, AK.

I didn't get a card either anyway.

Iron

Software Engineer working as a freelancer

Iron

I specialize in magic.

Iron

elec-mech design and mech integration

 

Iron

HW and SW for Post Secondary Education

Iron

Hardware, Firmware, and Software

 

EE, but more system level HW and FW eng.

 

Iron

Consulting Engineer

Iron

hardware design engineer

Iron

hardware -- mixed signal IC design

System Integration; Hardware and Software;

Iron

job function is sustaining engineering. mostly communication and embedded control electronics, some firmware support.

Iron

Morning from CA

 

Iron

Hardware and Software Design

Iron

Question 1 answer - Tech Mgr / Electronic Hardware

 

I do hardware, software and firmware.

Iron

Hardware management with some software.

Iron

Hardware and software.

Iron

Embedded SW for lighting control systems.

Materials and Process Development

Iron

Software/Embedded Engineering

Iron

@Alex: My job function is software. No immediate application for LEDs.

Iron

Hardware Architect

Iron

HW/FW/RF/Sys Design.

Iron

hello,  I am ASIC design

 

Iron

software and firmware and getting into HW

Iron

Good afternoon Carol.

Iron

Firmware eng

 

Iron

Design Engineering

Iron

Good afternoon Alex.

Iron

Good afternoon folks!

 

Iron

Good morning/afternoon to all

Iron

North Pole, Alaska,

Iron

hello there...good to be here for another presentation

Iron

Good Afternoon from Maryland

Iron

Good morning.  Interested in LED lighting for backlit monitors, etc.  HMIs...

Iron

good afternoon from chester

 

Hi Alex - can you tell us how to access our certificates (showing the Continuing Education Credits)?  Thanks.

 

Iron

Hello from Chicago

Iron

Good afternoon from Wisconsin

Iron

Good morning everyone. 

Iron

Not one Starbucks card here.

Iron

Hi from Mexico

 

Iron

Buon giornio from hazy humid Northern Virginia.

Iron

I think it said the cards will be at the conclusion of the seminar.  I don't know if that is weekly or after the 180 days.

Iron

Greetings from Denver!

Iron

Good morning all from sunny Edmonton.

Iron

Good afternoon

 

Iron

Has anyone received their Starbuck cards?

Iron

Good morning from Silicon Valley, Cslifornia

Iron

Good afternoon everyone

Iron

Good afternoon from sunny and warm Toronto

Iron

Good Afternoon from Atlantic Coast

Hello Everyone! Welcome and looking forward to the chat part.

Blogger

Good afternoon all.

Iron

Good afternoon! I am looking forward to the presentation.

 

 

Iron

I keep missing these.  Can't wait.

Love LEDs

Iron

Be sure to click 'Today's Slide Deck' under Special Educational Materials above right to download the PowerPoint for today's session.

Blogger

Please join our Digi-Key Continuing Education Center LinkedIn Group at http://linkd.in/yoNGeY

Blogger

The streaming audio player will appear on this web page when the show starts at 2pm eastern today. Note however that some companies block live audio streams. If when the show starts you don't hear any audio, try refreshing your browser.

Blogger


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