For the last several decades, every engineering task related to processing control is realized by the use of PLC (Programmable Logic Controller). If we are talking about induction motor control, which is the most common case, usually a VFD (Variable... Read more

The post Learn how to use PLC and VFD for pump control: Power and control circuits analysis appeared first on EEP - Electrical Engineering Portal.

In the domain of electrical engineering, seal-in contacts stand as pivotal components in control circuits, ensuring the sustained operation of electrical devices beyond the initial activation. These mechanisms play a critical role in maintaining the energized state of circuit elements,... Read more

The post Mastering schematic drawings: Analyzing seal-in contacts in motor control circuits appeared first on EEP - Electrical Engineering Portal.

Control circuits

An example circuit includes: a slew rate driver configured to provide an output voltage; a first voltage provider configured to provide a first input voltage to the slew rate driver in response to the output voltage being within a first range; and a second voltage provider configured to provide a second input voltage to the slew rate driver in response to the output voltage being within a second range. The slew rate driver is further configured to change the output voltage based at least in part on the first input voltage or the second input voltage.