The circuit of Figure 1 produces an accurate variable-frequency sine wave for use as a general-purpose reference signal. It includes an 8th-order elliptic, switched-capacitor lowpass filter (IC3) that ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. This being laid out, let's say that we have two 1kHz sine waves. Everything about them is the ...

In the first part of this series we discussed pedal effect circuit design and in the second part we looked at a distortion pedal circuit with low power and soft clipping. Now we will discuss a rather ...