Wednesday, May 25, 2022

My MATLAB Course Introduction for Scientists and Engineers

MathWorks MATLAB (short for Matrix Laboratory) is one of the most popular science and engineering mathematical tools. This summer I'm creating a series of MATLAB videos for an introductory online course I'm putting together at Holyoke Community College. This video is a quick intro to MathWorks and MATLAB. Full course videos will get into the MATLAB app with lots of hands-on practical and fun examples.

The course will start from ground zero assuming the student has no experience with MATLAB and work up to some interesting and powerful analysis techniques. Over the next couple of months I’ll be posting a few more videos using MATLAB as teasers for the complete course.

Want to learn more? I’ll be teaching an online MATLAB course  at Holyoke Community College. If you are anywhere in the world and interested in taking an online course with me drop an email to gsnyder@hcc.edu

Saturday, December 4, 2021

Happy Louie Dusseault (1934-2021)

“He was revolutionizing the industry with the great music he wrote and his great singing voice… There was a true entertainer.” Mitch Biskup

 

Diane’s Dad, Happy Louie, passed away the day after Thanksgiving….

 

I grew up in Western Massachusetts with a lot of Polish-American friends and during college I worked summer and winter breaks at a cast iron foundry with many of them along with their Dads. Hard working, honest and very proud of their ethnicity and families. However, back then Polish-American people were considered fair game and Polish jokes were common. 

Maybe you’ve seen the movie Flashdance? If you haven't, watch the comedian scene and you’ll hear some vintage ethnic stereotyping (in this case, some nasty Polish jokes) that were unfortunately still popular in 1983 when the movie was released. A $100 million lawsuit was even filed (and later dismissed) against Paramount Pictures that contended Polish jokes in the movie 'hurt Poles' chances of getting jobs.

 


“Now let everybody listen, I need some help from you just like the springtime needs the rain. Let's cut out those Polish jokes, we're as good as other folks. Polish blood is flowing through my veins.” Original Happy Louie and Julcia lyrics for Love And Peace Polka

 

Diane and I met in college. I had heard of her Dad but was not real familiar with Polish music. I remember the first time we met Julcia and Louie for lunch. Louie was quiet, reserved and (definitely) scoping me out. Right away he reminded me of some of the foundry guys – all good stuff. When I finally had the chance to watch him perform, I was blown away. Huge crowds that would pack the front of the stage waving red bandanas while Louie sang, played the trumpet and danced. He had the ability to make everyone feel special with his genuine honesty, generosity and kind heart and sense of humor. Most importantly, he made Polish-American people proud. Proud of who they were, their heritage, their families, their hard work and very proud to be Polish-American. 

 

“He didn’t just play Polkas. He had people up on the tables. He had incredible charisma. When he played a song, he made it feel like he was playing it for each person in the crowd. He had that pizazz. When he wrote a song it really touched people.” Lenny Gomulka

 

From humble beginnings Louie and Julcia traveled the world playing and entertaining so many. Years ago Parkinson’s slowly started to take things away - Louie’s voice, his trumpet, his dancing – so many of the things he loved. It never took away his culture, pride, dignity, and respect for others. Heartbreaking as it was to watch I don’t ever remember him complaining or feeling sorry for himself. 

 

Louie made a such a positive difference in so many lives. Memorial contributions in honor of Louie may be made to the MJF Foundation ATTN:  Donor Services, 111 West 33rd Street, 10th Floor, New York, NY 10120 for TEAM HAPPY LOUIE DUSSEAULT. 

Quote source: Polka world mourns death of bandleader ‘Happy Louie’ Dusseault. Springfield Republican. 12/4/21

Sunday, August 1, 2021

PSpice Lab Series Video 5 - Batteries In Parallel

Maybe you've got an RV or a boat with four or more house batteries used to power an air conditioner, oven, electric grill, etc. Maybe you've got a cabin off the grid and are harvesting solar energy to charge a battery bank. Ever wonder what those batteries are doing and how they are hooked up?

In this video I use PSpice to demonstrate how multiple batteries are connected in parallel in a power inverter, solar hybrid inverter or UPS (Uninterruptible Power Supply) to increase capacity and run your ac, oven, etc longer on a full charge.



For more PSpice laboratory simulations, visit my YouTube PSpice Playlist.

Want to learn more? I’ll be teaching a Systems 1 course online in the fall and a Systems 2 course in the spring at Holyoke Community College. If you are anywhere in the world and interested in taking an online course with me drop an email to gsnyder@hcc.edu Both courses will transfer to most university electrical engineering programs in the United States. 

Hope to see you there!!

Thursday, July 22, 2021

Internet Access In Support Of The Cuban People


I was in Cuba four years ago. The government had tight control of just about everyone and everything including Internet access back then so I’m not at all surprised they’ve been able to shut communications down amid the protests. I’ve been reading a lot about alternative access for Cubans lately. Satellite has been getting a lot of questions but the network and mobile devices are still a ways out. 

Today, balloons probably offer the best solution. Google actually has them ready to go with project Loon. Loon has been proven in collaboration with Telecom Kenya and used in Puerto Rico in partnership with AT&T and T-Mobile after Hurricane Maria. Each Loon balloon is made of polyethylene and has solar panels for electricity. They float between 60,000 and 75,000 feet which is above commercial airline height and provides 4G cell service to an area about the size of a tennis court. The problem – Loon requires network integration with a telco to provide service along with some equipment on the ground. Loon also requires permission from local regulators — something that the Cuban government surely would not grant.

Marcell Felipe, founder of the Inspire America Foundation, an organization dedicated to promoting democracy in Cuba and the Americas has been discussing a slightly different balloon idea without a lot of detail. Felipe claims he has been talking for a couple years with a contractor (not named, but could it be….??) that could deploy balloons that provide mobile phone connectivity without the participation of a ground provider. In comments to The Associated Press, Felipe has claimed it wouldn’t be feasible for the Cuban government to block these balloon-delivered signals “in any significant manner.″


Pic: Telecommunications Building, Revolution Square Havana. G Snyder 2017

Sunday, June 13, 2021

PSpice Lab Series Video 4: Voltage and Current Linearity In A Simple Resistive Circuit

In this video I use PSpice to take some measurements and Excel to record the measurements and make a simple graph showing the linear relationship between voltage and current in a simple DC resistive circuit.

Want to learn more? I’ll be teaching a Systems 1 course online in the fall and a Systems 2 course in the spring at Holyoke Community College. If you are anywhere in the world and interested in taking an online course with me drop an email to gsnyder@hcc.edu Both courses will transfer to most university electrical engineering programs in the United States. Hope to see you there!!

Thursday, June 10, 2021

Pspice Lab Series Video 3: Moving The Reference Ground Around

Zero volts reference, also known as ground is always a confusing topic. What if ground is placed at different locations in a circuit? In this 11 minute and 42 second video I use PSpice to show what happens when you move a ground around in a series circuit.

Want to learn more? I’ll be teaching a Systems 1 course online in the fall and a Systems 2 course in the spring at Holyoke Community College. If you are anywhere in the world and interested in taking an online course with me drop an email to gsnyder@hcc.edu Both courses will transfer to most university electrical engineering programs in the United States. Hope to see you there!!

Wednesday, June 2, 2021

Pspice Lab Series Video 2: Simple Series Resistive Circuits

 Here's a second PSPice video covering analysis of a simple series circuit with two dc voltage sources and four resistors.

Want to learn more? I’ll be teaching a Systems 1 course online in the fall and a Systems 2 course in the spring at Holyoke Community College. If you are anywhere in the world and interested in taking an online course with me drop an email to gsnyder@hcc.edu Both courses will transfer to most university electrical engineering programs in the United States. Hope to see you there!!