Article 440 applies to electrically driven air-conditioning (A/C) and refrigeration equipment. Each equipment manufacturer has the compressor motor built to its own specifications. The motors are ...

The ABCs of PID control. Considerations for interfacing elements in the electrical circuit to accomplish those parts of the PID function for position control. Firmware code implementation.

In principle, air conditioners and refrigeration units don't produce cold air. These systems transfer heat from one place to another and therefore reduce temperature in a confined area (passenger ...