The Tech Circuit Youtube channel to date, had nearly 100 videos on practical electrical theory for Electronics Technicians, Appliance Technicans, HVAC Techncians, Hobbyists, and any body that has an interest or need to learn more about practical electrical theory, diagnostics, and associated concepts. In this blog, we’ll highlight some of the most popular videos that currently foster thousands of views per month.
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About the Tech Circuit™ The Tech Circuit’s mission is to continuously improve and maintain the Field Technician’s electrical diagnostics aptitude. The need to provide electrical and electronic related diagnostic solutions in the field has become increasingly unavoidable. Developing an innate understanding of how electricity works greatly empowers you when encountering such scenarios. Below is a […]
The Tech Circuit’s mission is to better educate Appliance and HVAC Technicians in the area of electrical and electronics diagnostics and repair. There is clearly a need for increased education in this area – and the effort is endless. Although I thoroughly enjoy this mission, it does take time to maintain TechCircuit.org and the Tech […]
How do you test for an open Neutral in 120V circuits or outlets? In this video, I show you how how to test for an open or loose neutral in 120v outlets with a regular Multimeter, a LoZ meter, and a Voltage Pen. Yes, it is possible to test for such an open or loose […]
How do you read an electric dryer schematic? In this video, voltages maps overlaid on a schematic for a common Whirlpool made electric dryer. What voltages to expect for different operating scenarios and failures. You will be walked through all relevant functional states of this dryer, as well as its common failures. Within these walkthroughs, […]
Electrical issues can sometimes be misleading, with outlets appearing to function properly yet failing under load. In this blog, we’ll walk through a real-life example of how to diagnose and troubleshoot a 120v electrical outlet with a loose or floating neutral connection. By understanding the tools and methods involved, you can help determine whether the […]
For appliance technicians seeking to deepen their knowledge and troubleshoot effectively, DryerNotHeating.com is an invaluable resource. This comprehensive site is dedicated to educating professionals about the many reasons why dryers stop heating, providing a wealth of technical insights into common and uncommon issues alike. Technicians can explore detailed guides on diagnosing faulty components such as […]
Disclaimer: THIS BLOG IS INTENDED FOR APPLIANCE TECHNICIANS ONLY. ALWAYS USE APPROPRIATE SAFETY PRECAUTIONS WHEN WORKING WITH ELECTRICITY. THIS BLOG IS FOR INFORMATIONAL PURPOSES ONLY. IF YOU CHOOSE TO UTILIZE THE CONCEPTS IN THIS BLOG, YOU DO SO AT YOUR OWN RISK. THE AUTHER ASSUMES NO RESPONSIBILITY OR LIABLIITY FOR ANY ERRORS OR OMISSIONS IN […]
Intro In the 1970’s bleeder resistors on microwave oven high-voltage capacitors started coming into the picture amid safety concerns. By the early 1980’s they started becoming more standard. However, there are plenty of units out there without bleeder resistors, that can hold a charge for a very long time (weeks to even months), due to […]
Understanding Ohm’s Law is not only essential for building a strong foundation in electrical theory but also serves as a valuable tool for diagnosing electrical problems. Although many technicians know about Ohm’s Law, some may not use it because they don’t see its relevance or don’t realize when it can be helpful. Ohm’s Law allows […]
Most heating elements like those in dryers and ovens utilize a wire made of nichrome, which is an alloy composed of nickel and chromium. It has a very high resistance per foot, a high mechanical strength when hot, and a very high melting point. It also has an extremely low temperature coefficient of resistance (TCR). […]
What does the term “Thermal Inertia” have to do with oven pre-heating? Quite a bit actually. You might have noticed that in many electric ranges, both the bake and broil elements work to preheat the oven, but not simultaneously. The Preheating Process For many electric ranges the preheating process involves both the bake and broil […]