The present invention relates to a complementary transistor circuit and an amplifier using it, and, in particular, to a video amplifier for amplifying video signals and a high-definition CRT display device. In amplifying inputted video signals by using a multiplexer, a gain controller...http://www.google.de/patents/US5724519?utm_source=gb-gplus-sharePatent US5724519 - Complementary transistor circuit and amplifier and CRT display device using the same 
