Original poster: "Gary Peterson" <gary@xxxxxxxxxxxx>
Original poster: Ed Phillips <evp@xxxxxxxxxxx>Original poster: "Langer Giv'r" <transworldsnowboarding19@xxxxxxxxxxx>
. . . I am wondering about the frequency of output of my Tesla Coil . . .
. . . there is SOME radiation but it will be very small because the coil is a most inefficient radiator because of its length compared to the wavelength of the signal in it. . . .
If one operates a very large Tesla coil in the non-sparking mode, at say 100 watts, and say that 5% of the energy is dissipated in the form of electromagnetic radiation, where do you think the remaining 95% goes?
. . . The coupling from the primary circuit will be much higher at the fundamental frequency than at any harmonics so there won't be much harmonic current flowing in the secondary. On the other hand, the radiation efficiency of a very short antenna increases as the square of the frequency so any harmonics present will be radiated more efficiently than will be the fundamental. . . .Ed
Imagine that one has a 50 kHz Tesla coil RF transmitter with an air terminal that is elevated exactly 1.5 meters above the resonator's top turn. If during operation, in addition to the 50 kHz primary excitation current, a 50 MHz signal were to be coupled to the resonator, would the vertical conductor that connects the resonator to the terminal efficiently radiate a 50 MHz RF signal? What would be the observed effect at an identical Tesla coil RF receiver?
Gary Peterson