The useful troubleshooting techniques that follow are the result of 20 years of electrical-engineering projects in the automotive, biomedical, instrumentation, and telecommunications areas.

We’ve all experienced that magic moment when, after countless frustrating hours of experimentation and racking your brain, the object of our attention starts working. The 3D printer finally produces ...

A common metering device used on new walk-in cooler/freezers today is the electronic expansion valve (EEV). It allows for a tighter control of a refrigerant’s superheat value leaving the evaporator ...

It’s important to learn and use component-level troubleshooting skills to diagnose and repair electronic problems, even in today’s world. The process involves digging into an electronic device, ...

Repairing reach-in coolers and freezers with electronic temperature controllers can be challenging at times. Some failures are easy to troubleshoot and repair, but others can be frustrating. For ...

We know not everyone who likes to build circuitry wants to dive headfirst into the underlying electrical engineering that makes everything work. However, if you want to, now is a great time. Many ...