This high quality circuit with complementary symmetry was found in an Electronics World of 1966. It can be made with modern transistors like the BD or TIP series.
The circuit shown in the figure makes it possible to trigger a load after times that can extend up to 4...
If you have a disused old computer, the type that still has a parallel port, you can use it in...
This circuit of a 1969 Electronic Design uses RTL logic. The setting can be adapted to TTL. The...