Well-known industry author and instructor Jim Johnson is offering a new video for technicians who want to sharpen their troubleshooting skills. "This HVAC training video program, is available in DVD ...

An electrical schematic diagram might look like a nonsensical drawing to the layman, but to the electrical engineer, it’s a high-level documentation that provides a ton of insight and instruction. The ...

Written and presented by Jim Johnson, this HVACR technician training course presents an overview of the fundamentals of schematic diagrams. With a firm understanding of the fundamentals of wiring ...

There’s a few open source options out there for creating electrical schematics. KiCad and Fritzing are two that will take you from schematic capture to PCB layout. However, there’s been limited ...