11. A tetrode 's plate and screen grid voltage is modulated via an audio transformer. 12. Triodes and a few tetrodes were made. 13. A passive grid circuit used at VHF / UHF frequencies might use the 4CX250B tetrode . 14. A pentode has an additional suppressor grid ( g3 ) to eliminate the tetrode kink. 15. The company also introduced the KT66 " kinkless tetrode " ( beam power tetrode ). 16. The company also introduced the KT66 " kinkless tetrode " ( beam power tetrode ). 17. *Lucas van Tetrode in " De Haarlemse Schuttersstukken ", by Jhr. 18. Willem van Tetrode of the Netherlands and Barthelemy Prieur of France are also on the roster. 19. In the Sackur Tetrode theory the constant depends only upon the mass of the gas particle. 20. An engraving was published by Hendrick Goltzius of a design for a silver salver by Tetrode .
