This collection contains tasks for some sections of the Amplifying Devices course. The collection, along with tasks of moderate difficulty, includes a number of fairly simple tasks and exercises to facilitate independent study of the material. Most of the problems are solved, in the simplest cases answers are given. In conclusion, an example of a typical calculation of a multi-stage pulse amplifier is given, illustrating the calculation of the amplifier as a whole, and not its individual links. The collection is intended as a textbook for part-time students of the specialty "Radio Engineering."