Sallen-Key Butterworth High Pass Filter Calculator

Ra = Filter Resistor
Rb = Filter Resistor
(Ra = Rb)
Ca = Filter Capacitor
Cb = Filter Capacitor
(Ca = Cb)

Enter value and click on calculate. Result will be displayed.

Enter your values:

Cutoff Frequency:

(Enter any one value – Ra or Rb or Capacitor)

Resistor Ra:
Resistor Rb:
Capacitor (Ca = Cb):

Recent Posts


The 8 ways 3D printing is changing manufacturing forever

People debate whether 3D printing / additive manufacturing will really have an impact on design and manufacturing. Hod Lipson, professor at Columbia University, recently gave a presentation on why 3D printing will definitely disrupt what we know of today as design and manufacturing. Here are his 8 reasons. 1. No assembly required 3D printing enables [Read More]


Sealing manufacturer gets aggressive with its recycling program

With landfill space at a premium throughout the world, a Freudenberg-NOK Sealing Technologies plant in Mexico is making an environmental difference by recycling nearly 100% of its industrial scrap and waste. Freudenberg-NOK’s Cuautla facility, in the state of Morelos, adopted an aggressive recycling program nine months ago in keeping with the company’s overall push to [Read More]

Simulation apps for the IoT

As engineers work toward 5G and the Internet of Things (IoT), designers of RF and microwave devices can use multiphysics modeling and simulation of antennas and circuits, not limited to RF and microwaves but extending to the range of millimeter waves and Terahertz. The latest release of the RF Module in COMSOL Multiphysics comes with [Read More]

Sponsors of Design World Online