A UL508A Panel is an electrical control panel with a UL508A Label. This certifies it meets the UL508 safety standard and was produced by a panel shop with UL 508A certification.
A SCR or silicon controlled rectifier is a three-terminal semiconductor switching device which is probably the most important circuit element after the diode and the transistor.
Basic Facts About DC Motors
The DC motor is a type of electrical machine that converts direct current electrical power into mechanical power. Common DC motors depend on the forces created by magnetic fields. Most DC motors contain a type of internal mechanism that is electromechanical or electronic and produces rotary motion.