A Family Medical History Filled With Diabetes, Heart Disease, and Cancer. As a young adult, I witnessed my beloved mother, the rock of our family, battle type 2 diabetes and the complications that come with it. She suffered from kidney failure, vision problems, and heart disease. After 33 years of fighting diabetes, she passed away in April of 2002. I miss her dearly.
Generally speaking, overdrive is the highest gear in the transmission. Overdrive allows the engine to operate at a lower RPM for a given road speed. This allows the vehicle to achieve better fuel efficiency, and often quieter operation on the highway.
Variable Frequency Drive (VFD) A Variable Frequency Drive (VFD) or adjustable speed drive is a motor controller device that runs an electric motor by varying the voltage and frequency supplied to the electric motor. VFDâs are also known as AC drives or microdrives since they control the speed of a motor, generally a three phase motor.