Hospitals have many highly technical and expensive machines that perform a variety of tasks. Most are there to save lives and assist doctors and some are just there to do a basic job. Medical vacuum systems are that kind of tool. They are the unsung heroes of the hospital, as well as being important medical […]
In the world of mechanics and engineering, there are many different ways to create motion and do work. Two of the oldest, most popular and basic methods are hydraulics and pneumatics. Both rely on similar principles of physics and motion, but they achieve it in different ways. We will take a look at the two […]
Pneumatic flow control valves circulate air and gases throughout a larger pneumatic system by either allowing or inhibiting the flow of pressurized air. The function of proportional valves falls into a wide spectrum somewhere between on/off solenoid valves and electrohydraulic servo valves. With proportional valves, output flow isn’t exactly linear in relation to the control signal. Despite their nonlinear nature, proportional valves offer an […]
Traditional electronic pressure regulators typically employ a dual on/off valve design, with both an inlet and exhaust valve. Changes in pressure are controlled by cycling the on/off valves to open and close via Pulse Width Modulation. Using Pulse Width Modulation can be problematic for control systems for various reasons. Problems associated with using pulse width […]
