If you are in any way connected with radio, you will have encountered the low pass filter as a means to remove unwanted harmonics from the output of your transmitters. It’s a network of ...

Low-pass filters (LPFs) are fundamental components in modern electronic systems, serving to permit signals below a designated cutoff frequency while attenuating higher frequencies. Recent advances ...

Figure 1 shows a programmable, second order, low-pass filter in a singlesupply, Sallen-Key configuration. As illustrated by Figure 2, this filter may be used for multiple signals.

A scheme of simple band-pass RC- and LR-filters on op-amps containing only one capacitor or inductor and 3 resistors is proposed.