Title :
Technologies for all solid state TV transmitter
Author_Institution :
Dept. of Broadcast Equipment Design, Toshiba Corp., Tokyo, Japan
Abstract :
Toshiba developed an all solid state 50 kW VHF TV transmitter and an all solid state 30 kW UHF TV transmitter in 1985. The technologies embodied in these solid state transmitters are described. The 50 kW visual power amplifier block consists of forty 1.5 kW visual power amplifiers, and the 12.5 kW aural power amplifier block is composed of ten 1.5 kW aural power amplifiers. These power amplifiers consist of power MOS field effect transistors (FETs) 2SK410s. The 30 kW power amplifier block consists of thirty-six 1.0 kW visual power amplifiers, and the 7.5 kW aural power amplifier block is composed of twelve 800 W power amplifiers. These power amplifiers consist of 2SC3702s bipolar transistors
Keywords :
bipolar transistor circuits; field effect transistor circuits; power amplifiers; power transistors; radiofrequency amplifiers; television transmitters; 1.0 kW; 1.5 kW; 12.5 kW; 2SC3702 bipolar transistors; 30 kW; 50 kW; 7.5 kW; 800 W; MOSFET; Toshiba; UHF TV transmitter; VHF TV transmitter; aural power amplifier; power MOS field effect transistors; solid state TV transmitter; visual power amplifier;
Conference_Titel :
Advances in Solid State Technology for Broadcast Transmitters, IEE Colloquium on
Conference_Location :
London
