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
Document File: 2 page(s) / 180K

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.

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XEROX DISCLOSURE JOURNAL

VIDEO AMPLIFIER

W. E. DuVall

B

Proposed Classification
TJ.S. Cl. 330/18
Int, Cl. H03f 3/42

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.

I

77Volume 1 Number 2 February 1976

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[This page contains 1 picture or other non-text object]