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Bog, hæftet The Unilateral Dynamic Characteristics of Three-Electrode Vacuum Tubes: A Thesis (Classic Reprint) af John George Frayne

The Unilateral Dynamic Characteristics of Three-Electrode Vacuum Tubes: A Thesis (Classic Reprint)

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Excerpt from The Unilateral Dynamic Characteristics of Three-Electrode Vacuum Tubes: A Thesis

The effective resistance of these circuits are as follows: fundamental, ohms; first harmonic, ohms; second harmonic, Ohms; third harmonic, Ohms.

Arrangements (not Shown in F... Læs mere

Excerpt from The Unilateral Dynamic Characteristics of Three-Electrode Vacuum Tubes: A Thesis

The effective resistance of these circuits are ... Læs mere

Produktdetaljer:

Sprog:
Engelsk
ISBN-13:
9781333933326
Sideantal:
30
Udgivet:
01-10-2016
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Excerpt from The Unilateral Dynamic Characteristics of Three-Electrode Vacuum Tubes: A Thesis

The effective resistance of these circuits are as follows: fundamental, ohms; first harmonic, ohms; second harmonic, Ohms; third harmonic, Ohms.

Arrangements (not Shown in Fig. 1) were also made for measuring higher harmonics than these, by changing the inductance Lu, and by retuning C11. Each thermo-couple could be connected successively to a Leeds and Northrup galvanometer, and the de¿ection of the latter indicated the root - mean square value of the alternating current passing through the heater. Previous to placing the thermo-couples in the Circuits, they were calibrated using alternating current (60 cycles). It will be seen that the harmonic analyzer is essentially a voltage amplifier, picking out each frequency in the producer and magnifying its voltage. For this reason a tube with a large voltage amplification constant was Chosen, in fact the value of u as given by equation (4) was 26.

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