Browse Prior Art Database

VIDEO AMPLIFIER

IP.com Disclosure Number: IPCOM000022835D
Original Publication Date: 1976-Feb-29
Included in the Prior Art Database: 2004-Mar-26

Publishing Venue

Xerox Disclosure Journal

Abstract

Cathode ray tube video amplifiers typically require a voltage swing on the order of 50 volts with rise and fall times of less than 7 nanoseconds, The video amplifier shown in the Figure utilizes small geometry low voltage transistors which have a higher frequency response than large geometry high voltage transistors, The small geometry low voltage transistors Qi, Q2, Q3, Q4, and Q5 share a portion of the high voltage B thereby providing for a higher output voltage and power. The collector to base capacity of the low voltage transistors Qi, Q2, Q3, Q4, and Q5 are also in series which allows for a lower time constant and a higher bandwidth.