replica de Forest oscillion transmitter скачать в хорошем качестве

replica de Forest oscillion transmitter

This session we build a replica of one of de Forest's very first vacuum tube transmitters. He had made many arc transmitters but they were very inefficient and unreliable. He then built a much more powerful audion vacuum tube he called an "oscillion." This had a much larger filament and plate so it could handle significantly more power than the spherical audions which were used for receiving sets. We will now build a replica of one of his very first vacuum tube radio telephone transmitters! He built this model sometime between 1915 and 1920.