Inexpensive High Speed Pulse Generators

Roughly 20 years ago, we did a column for those starting to investigate high-speed digital logic, and this month I would like to revisit the simple technique we described then. This also fits in with our description of low-cost simple equipment that can be built by the home brewer without a lot of effort (or cost) and while it doesn’t produce precision laboratory results, it may still be what you need, at least for a start.

With the experimental work now going on at higher and higher frequencies by some forward-looking amateurs, it occurred to us that there is really no