One such gem of analog design was the SG505, an ultra-low-distortion oscillator module that [Paul] is trying to replicate with modern parts. That’s a tall order since not only did the original ...

To be honest, I can’t actually remember which circuit went into the equipment, but his Wein oscillator was a lovely thing. I have just discovered that Apex Microtechnology of Arizona actually makes a ...

We’ll turn the simple unity-gain buffer of last session ... that turns out to be sharp enough to build a sine-wave oscillator on, and tweakable enough that we’ll make a damped-oscillator ...