Download Electrostatic motors; their history, types, and principles by Oleg Jefimenko, Thomas Valone, David K. Walker PDF

By Oleg Jefimenko, Thomas Valone, David K. Walker

The main authoritative and finished publication near to utilizing excessive voltage electrical cost to strength a motor. The ebook exhibits the kind of electrostatic motor that was once first invented by means of Ben Franklin in 1748. It additionally stories and illustrates electrical pendulum vehicles, electrical wind cars, Franklin's spark automobiles, capacitor cars, inductance cars, corona vehicles, liquid immersed cars, electret automobiles and extra. The final bankruptcy exhibits how the electrostatic motor may be designed to be powered via atmospheric electrical energy, which Professor Jefimenko experimented with on the college of West Virginia. the writer is especially meticulous to provide dates and references for the historic use of relatively distinctive electrostatic cars. Dr. Jefimenko's articles from Popular Science journal are reprinted within the Appendix when you are looking to construct their very own electrostatic motor. He additionally experiences the atmospheric capability for producing power, stating it's within the gigawatt variety. The ebook additionally contains his overview article at the earth's electrical box as a normal resource of electrostatic power.

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Extra resources for Electrostatic motors; their history, types, and principles of operation

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J. Felici. 6 According to Bollée, the maximum average torque on the rotor in a capacitor-type electrostatic motor is T max = kNV 2, where k is a geometrical constant, and V is the peak voltage applied. A motor with many electrodes is therefore slow but produces greater torque. The power of the motor is proportional to the square of the applied voltage and to the frequency but

7, p. 184). It is very probable that this conclusion led him to the invention of his big electric motors, the famous "electrical wheels", which are described in the next chapter. REFERENCES l. P. Benjamín, A History of El,ectricity, J ohn FIGURE 19 A delightful el,ectric toy utilizing the el,ectric wind for its propulsion was made by E. R. King, an associate of James Wimshurst. This toy, which may be call,ed an "el,ectrical rabbit hunt ", is now at the Science Museum in London. Wiley and Sons, New York, 1898, pp.

The rotor was made of two large glass disks separated by a smaller disk so as to have a deep slot along its edge. Two flat sharp-point combs were inserted diametrically opposite to one another into the slot of the rotor (Fig. 32). Johnson estimated that bis motor could run at about 2000 rpm and had a power of about 90 watts. Justas Poggendorffs motor was derived from Holtz's electrostatic machine, a series of electrostatic motors were similarly derived from Wimshurst's electrostatic machine. 8 McVay's first motor (Fig.

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