The relation between switching speed of a trigger circuit and the gain band width (GBW) of an amplifier is discussed. A special series connection of two tubes—referred to as a dynamic plate‐load amplifier (DPL)—is then presented and analyzed. A dc analysis shows that the DPL investigated has 18% of the output impedance, and 2.75 times the dc gain of a conventional amplifier. A transient analysis shows that the DPL may have 3 times the advantage in GBW over a conventional amplifier. This GBW improvement recommends its utilization in fast trigger circuits.

Topics
Electrical properties and parameters, Comparators
1.
J. Millman and H. Taub, Pulse and Digital Circuits (McGraw‐Hill Book Company, Inc., New York, 1956), p. 152.
2.
Frederick E. Terman, Electronic and Radio Engineering (McGraw‐Hill Book Company, Inc., New York, 1955), p. 288.
3.
G. E. Valley, Jr., and H. Wallman, editors, Vacuum Tube Amplifiers (McGraw‐Hill Book Company, Inc., New York, 1948), p. 456.
4.
>Michiyuki
Nakamura
,
Rev. Sci. Instr.
28
,
1015
(
1957
).
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5.
Thomas L. Martin, Jr., Electronic Circuits (Prentice‐Hall, Inc., Englewood Cliffs, New Jersey, 1956), p. 92.
6.
See reference 5, p. 117.
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© 1959 The American Institute of Physics.
1959
The American Institute of Physics
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