What is a VFD? Variable-frequency drives, or VFDs, are a means of controlling the speed of an ac motor, typically an ac induction motor. It does so by varying the frequency of the power source. VFDs operate by switching their output devices, which can be transistors, IGBTs, or thyristors, on and off. VFDs can be […]
speed control
Bison Gear’s TightDrive™ Motor-Mounted Speed Control
St. Charles, IL — Bison Gear’s new TightDrive™ speed control for permanent magnet DC (PMDC) motors was designed for applications that require a convenient location for the control … on the motor. The majority of PMDC gearmotors and motors used in industry today require speed controls in order to operate. Typically, the control is wired […]
Bison Gear’s TightDrive™ Motor-Mounted Speed Control
St. Charles, IL — Bison Gear’s new TightDrive™ speed control for permanent magnet DC (PMDC) motors was designed for applications that require a convenient location for the control … on the motor. The majority of PMDC gearmotors and motors used in industry today require speed controls in order to operate. Typically, the control is wired […]