Medium wave range booster (CB21677E)

This circuit is from a 1960 book by Hugo Gernsback. The transistors are germanium from the time.

Sinple Flasher (CB16390E)
This project was found in a 1981 documentation consisting of a simple blinker with 2 transistors. The...
Up to 10 kV Power Supply (CB18588E)
This complete experimental source of low current and very high voltage can generate voltages from...
Aquarium Automation (CB17047E)
The purpose of this circuit is to automate the activation of an aquarium air pump (aerator). The...