Producing attention-grabbing imagery on an analog oscilloscope is a enjoyable exercise loved by many, with a wonderful demonstration by [Henry Segerman] offered in a current video which covers [Matthias Goerner]’s demonstration. Utilizing the electron beam, shapes could be drawn onto the phosphor of the oscilloscope’s CRT — all with out touching any digital circuitry. On the core are analog parts like an operational amplifier integrator, multipliers and different parts.

With simply plenty of these easy parts in a circuit, it’s attainable to attract all kinds of shapes, all by making use of the suitable trigonometric parameters. Along with the drawing of shapes, additionally it is demonstrated how these analog indicators can be utilized for an analog audio synthesizer, and at last the picture displayed on the oscilloscope is captured on Kodak (Polaroid) prompt movie, making all the producing, processing and capturing chain absolutely analog.

Whereas we’d be the final to marketing campaign towards digital electronics, it’s fascinating to think about simply how a lot could be accomplished with analog electronics and a little bit of arithmetic. We assume that everybody did listen throughout math lessons, making this an ideal probability to make use of all that data of trigonometry.

Because of [Bornach] for the tip.