ULF high-pass filter

139

01:48:40

With a -3dB point of 1.59 milliHerz, this is a filter for the ultra-low frequency band. It's only first-order, but I thought such a low-frequency filter with such ordinary components would be a little interesting, at least. The frequency can be set much lower by increasing the resistor alone.

Oh wait... it's dependent on the op-amp's exact gain. That is not good at all. :/ Op-amp gain varies with frequency, even in high-speed op-amps.

published 5 years ago

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.