Method for realizing double triode valve with high fidelity, miniwatt and voltage amplification
A technology of voltage amplification and electron tube
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Embodiment 1
[0022] It includes a glass tube shell 1, a getter ring 2 and its supporting sheet 3 ( figure 1 ), two single helical filaments 13 ( figure 2 , image 3 ), two cylindrical cathodes 4 ( figure 1 , figure 2 ), two elliptical grids ( Figure 6 , Figure 7 ), two 0.15mm thick tops with elliptical funnel-shaped well holes 12 ( figure 1 , Figure 11 , Figure 12 ) flat box-type anode 8 ( figure 1 ), two mica sheets 6, 10 ( figure 1 , Figure 13 , Figure 14 ), the mica sheets 6 and 10 also have through holes for installing the above-mentioned three poles, and also include a stem 11.
[0023] The lateral diameters of the elliptical garden funnel wells 12 are respectively 0.52mm and 0.1.8mm, and the longitudinal diameters are respectively 0.62mm and 0.58mm. mm.
[0024] The length of the 4 bushings of the two cylindrical cathodes is 12% longer than that of the existing bushings, so as to realize cooling of the cathode.
[0025] Two single spiral filaments 13 are respect...
Embodiment 2
[0032] Two flat box anodes 8 ( figure 1 ) When there is no well hole (not shown) for absorbing external audio signals on the board, a metal well hole shield (not shown) for absorbing external audio signals is arranged outside the flat box-type anode, and the hole diameter is 0.1.8mm -0.52mm for audio fidelity. The structure of its grid, cathode, and filament is the same as that of Embodiment 1.
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