Figure 2-27.Common types of anode blocks.
The anode block shown in figure 2-27, view (A), has cylindrical cavities and is called a HOLE-
AND-SLOT ANODE. The anode block in view (B) is called the VANE ANODE which has trapezoidal
cavities. The first two anode blocks operate in such a way that alternate segments must be connected, or
strapped, so that each segment is opposite in polarity to the segment on either side, as shown in figure 2-
28. This also requires an even number of cavities.
Figure 2-28.Strapping alternate segments.
The anode block illustrated in figure 2-27, view (C), is called a RISING-SUN BLOCK. The alternate
large and small trapezoidal cavities in this block result in a stable frequency between the resonant
frequencies of the large and small cavities.
Figure 2-29A, shows the physical relationships of the resonant cavities contained in the hole-and-slot
anode (figure 2-27, view (A)). This will be used when analyzing the operation of the electron-resonance