In this episode Shahriar investigates a malfunctioning E3646A Dual Channel Programmable Power Supply. The power supply provides the correct output voltage on one channel. However, the second channel produces no output and continuously reads 0V and 0A.
Applying an external voltage to the malfunctioning channel produces the correct readout from the instrument display suggesting that most of the channel circuitry is functional. After a close examination of the power supply schematics, the problem is traced to a failed solder joint. The DAC output amplifier is disconnected from the output transistor and after repairing the colder joint, the power supply is fully functional.
In this short episode Shahriar shows a few items to give away! Please leave a comment and a person at random will be chosen. There will also be a Q/A session sometime in the future, please also leave your questions in the comment section.
The winners of the draw will be notified at a later date.
Since the creation of The Signal Path video blog in May of 2011 I have focused on producing the type content which is either difficult to find or difficult to learn. Despite being the foundation of human communication, RF and microwave electronics often seem like magic and my goal has been to demystify these concepts. The Signal Path blog provides a rich depth and breadth of electrical engineering topics and experiments. Equipment reviews and repairs are always accompanied with research and industry relevant experiments and tutorials. The aim of The Signal Path is to provide free education to everyone across the world, possibly the greatest gift from a human to another.
Any support you offer to The Signal Path will be put back into lab maintenance, improving the quality and frequency of video production and acquiring components to further diversify content production. As of August 2016, The Signal Path has produced over 66 hour of original material.
On behalf of all viewers from around the world I want to thank you for supporting The Signal Path.
In this episode Shahriar builds a magical charger circuit that has an efficiency of tens-of-thousands of percent! But not to worry, it is a trick and the trick is revealed in the video. The purpose of the video is to discuss the nature of the scientific method and our society’s need for free education.
I had a great time as a guest of The Amp Hour. We talked about everything from device physics to circuit design into the mm-wave frequencies and beyond. Although this interview took place a short while ago, I thought it would be beneficial to also have a link here at The Signal Path. Also, don’t forget to listen to the many great episodes of The Amp Hour. The link to my interview can be found here.
The Signal Path (TSP) is an electrical engineering video blog for industry professionals, students and hobbyists. TSP is a non-for-profit website dedicated to provide free education spanning a wide range of electrical engineering topics. Equipment reviews, tutorials and repair videos are posted regularly.