The most common way to prevent EMI from interfering with devices is by installing Feedthrough Filters on their signal and power lines. It is a component that has a capacitive element built around a central conductor.
Feedthru Filters are built using a dielectric material that can be shaped into a circular form. This may be in the form of a discoidal (donut shape) or in a tubular form. These shapes allow for the center conductor to pass through and attach to them in the center. This makes the “+” connection to the capacitor element. The outer diameter of this form is the “-“ connection to the capacitor element, and it is typically attached to an electrical ground point of the device.
Quantic Corry Ceramic Tubular Filter
Mechanical Size: Standard and High Density D-Sub Configurations in 9, 15, 25, 37 & 50 pin sizes
- Circuit Types: “C”, “Pi”
- Voltage range to 100VDC
- Capacitance values to 47,000pF