Frank B. A. Früngel (Auth.)'s Capacitor Discharges–Magnetohydrodynamics–X-rays–Ultrasonics PDF

By Frank B. A. Früngel (Auth.)

ISBN-10: 1483229807

ISBN-13: 9781483229805

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W. von Tersch and A. W. Swago, Prentice-Hall, 1953. b. Single Capacitor, Nonlinear RC Circuit [184] By conventional graphical methods any circuit containing one capacitor, any number of current sources, voltage sources, or linear and nonlinear resistors can be resolved into the circuit of Fig. A6b-1. A completely general system would require the resistance R to be a function of / (or of the voltage eR), and the capacitance C to be dependent upon the terminal voltage ec (or the charge q on the capacitor).

As long as a resistancepoor rectifier with a choke coil will be cheaper than a high-potential power source that has been derated for the output increase necessary for resistor operation, a rectifier will be of advantage. 5 μΐ = 5 x 10- 7 farads as discharge capacitor shall be charged and discharged at a sequence frequency of/ = 10,000 per second and a potential of U = 10 kv. ) For this purpose there is necessary a charging energy of: AL = i2CU2 = \ x 5 x 10" 7 x 108 = 25 watt-sec and the charge is Q = C x U = 5 x 10- 7 x 104 - 5 x 10~3 amp-sec The average or mean current becomes I =f x Q = 104 x 5 x 10- 3 = 50 amp 9.

6-1 ohm spark resistance. The maximum apparent output is therefore 60 megavolt-amp. The effective output can be determined only from oscillographic traces of current and voltage and multiplication of both curves. Such procedure results in about 30-40 megawatts. For large peak currents at high voltage and for the construction of discharge devices having the lowest possible inductance, aluminum-foil-wound paper, or polystyrol-foil, capacitors have gained widespread acceptance, The latter are mostly paraffin impregnated under vacuum.

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Capacitor Discharges–Magnetohydrodynamics–X-rays–Ultrasonics by Frank B. A. Früngel (Auth.)

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