1. Her main teaching were electromagnetic theory, electron tube circuits and microwave technology. 2. Initially the Laureldale Laboratory designed electron tubes ( vacuum tubes ). 3. :An engineer draws a random sample of electron tubes and measures their voltage. 4. Arco's greatest service lay in the development of the large electron tube experiments. 5. Krypton-85 was used in cold-cathode voltage regulator electron tubes , such as the type 5651. 6. JJ Electronic follows up on the TESLA was the main Czechoslovak producer of electron tubes . 7. He is best known for his book, " Handbook of Electron Tubes and Vacuum Techniques ". 8. Tantalum was extensively used in the production of ultra high frequency electron tubes for radio transmitters. 9. His area of expertise was electron tube technology, and specifically light amplification devices for night vision. 10. NEC started developing electron tubes in 1925. 
Mobile