January 1997
Beginner
435 pages
18h 29m
English
Content preview from Microwave and Wireless Communications Technology
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202 MICROWAVE VACUUM TUBE DEVICES
0
OUTPUT
EA,
+
~vc
Figure 10-4
ANODE
I
-
_.~
--v~
++++
.~..VA
GRID ~, / PATH '~
-
T_
I I EOAT, V,
I
, ~_
CHARGES
_ . CATHODE
(A) (B)
Barkhausen-Kurz oscillator.
uum tube, it attracts the negatively charged electrons of the space charge. These
electrons form the anode current.
The grid is a porous element placed between the cathode and anode. If it is
biased negative (Vc) with respect to the anode, it can control the flow of electrons.
If the negative bias is sufficiently high, it can completely shut off the flow of anode
current. When the signal voltage
(Vs)
is superimposed on the bias ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.