Found in a 1990 PE Hobbyst, this 4-digit circuit has a high response speed. The circuit is based on TTL logic.
This circuit was found in an old publication about transistors. The circuit can be used to drive...
Using a symmetrical source this circuit reverses the rotation of a small motor through light...
This circuit was found in a 2005 Linear Technology documentation. The circuit is based on LTC4213...