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Патент USA US2129076

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s?jizt. 6, 19-38.
_ WIENECKE
‘
2,129,076
TUBE FOR SHORT WAVES
Filed March a, 1935
inventor :
2,129,075
Patented Sept.'6,1938
UNITED STATES PATENT otter.
2,129,076
TUBE FOR SHORT‘ WAVES
Bruno Wienecke, Berlin, Germany
Application March 8, 1935, Serial No. 10,046
In Germany March 13, 1934
2 Claims.
(Cl. 250-275)
In tubes for short waves, both for transmis
sion as well as for amplifying purposes, it is
the leads to the electrodes as
short as possible. In the case of comparatively
long electrodes the leads should be taken to the
middle, so that the natural wave will be as short
as possible.
According to the invention, this is performed
in the case of the-grid by the fact that the lead
thereto is taken to its middle through an open
ing in the anode.
In Fig. 1, l is the cathode, 2 the anode, and
3 the grid, which is connected at its centre at
one or, as illustrated by way of example, at two
points with the leads 4 through openings in the
15 anode.
The anode is led out for example ver
tically thereto at 5.
Figure 2 is a horizontal cross-sectional view
through the cathode I of Fig. 1.
I claim:
7
l. A tube for short waves comprising a cath
ode, a grid, and an anode, two leads connected
to the centre of said grid and passed through
two openings in said anode, said leads being di
rected towards opposite sides.
2. An electronic tube for very high frequencies
comprising a bulb, a cathode, a grid and an
anode, two leads connected to the mid-zone of 10
said grid and passed through two openings in
the mid-zone of said anode, said grid leads being
directed towards opposite sides, these leads and
the leads or said cathode and said anode passed
out of the bulb in three directions spaced per
15
pendicular to each other.
BRUNO WIENECKE.
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