Designing a Functional Circuit from a Patent That Does Not Quite Give the User All of the Information Required


US 3,647,970

It is not a rule or law that a patent document give you all of the information in one place or in any particular order. It is a rule that "one skilled in the-Art" should be capable of reproducing what the patent describes.

In this case, there are several scheamtic drawings, embodiments and disjointed discussions that discuss this patent. It was a discussion in another book entirely that brought me here in the first place.

Starting with:


With the patent document and a yellowing-pen in-hand, I was able to design this:


To give the desired waveforms: