The Unilateral Dynamic Characteristics of Three Electrode Vacuum Tubes
The Unilateral Dynamic Characteristics of Three Electrode Vacuum Tubes
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The first relation shows that R must be a nega- tive quantity for n = I. Hence the fundamental has no real maximum. For n = 2, the maximum occurs at R = o. For n 3, the maximum occurs when the external resistance is one third of the tube resistance. For the higher derivatives, the position of the maxima occur at continuously increasing values of R.
If the amplitude of the impressed e. M. F. Is less than 15 volts, equation (3) holds good for all values of R, when the plate voltage is maintained ...at 200 volts, and the grid voltage is 7. 5. For values of e over 15 volts, using the same grid and the plate potentials, equation (3) no longer holds. Hence the amplitudes of the harmonics as experimentally found for values of e over 15 volts depend on other features of the amplifier. Since E c is 7. 5 the grid will be raised to a positive potential of 7. 5 volts during this cycle. In Fig. 5 it will be noticed that at this value of E c on the 2oo-volt parameter, the static characteristic begins to lose its parabolic nature and tends to flatten out.
What to read after The Unilateral Dynamic Characteristics of Three Electrode Vacuum Tubes?
You can find similar books in the "Read Also" column, or choose other free books by John George Frayne to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The first relation shows that R must be a nega- tive quantity for n = I. Hence the fundamental has no real maximum. For n = 2, the maximum occurs at R = o. For n 3, the maximum occurs when the external resistance is one third of the tube resistance. For the higher derivatives, the position of the maxima occur at continuously increasing values of R.
If the amplitude of the impressed e. M. F. Is less than 15 volts, equation (3) holds good for all values of R, when the plate voltage is maintained ...at 200 volts, and the grid voltage is 7. 5. For values of e over 15 volts, using the same grid and the plate potentials, equation (3) no longer holds. Hence the amplitudes of the harmonics as experimentally found for values of e over 15 volts depend on other features of the amplifier. Since E c is 7. 5 the grid will be raised to a positive potential of 7. 5 volts during this cycle. In Fig. 5 it will be noticed that at this value of E c on the 2oo-volt parameter, the static characteristic begins to lose its parabolic nature and tends to flatten out.
What to read after The Unilateral Dynamic Characteristics of Three Electrode Vacuum Tubes?
You can find similar books in the "Read Also" column, or choose other free books by John George Frayne to read onlineMoreLess
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