Recent Dr. Green
The extra coil raising the resonant frequency of the resonant transformer(Pri + Sec) is great. This is what I am looking for. This result means that the extra coil is exhibiting an inductive reactance, indicating its operation is a little beyond its quarter wave frequency. The shunt ring capacitor exists to tune this magnetic component out. Thereby derived is a condition of consonant resonance which both secondary and extra coils are in tune.
Also, do not use L.E.D. use small incandescent lamps like the #327, #44, or #42 number lamps. Use Ne2H lamps as the voltage probes, a neon wire lead lamp on the end of a stick. The coils need to be supplied with enough power to light a neon lamp along the coil. Also, the tiny incandescent lamp with an exploring coil is a good M.M.F. probe. With these the standing wave distribution can be studied on these coils.
In basic terms, if a transmission structure can support travelling and standing waves, a set of relations exist.
1) If the line is quarter wave resonant, the sending impedance is resistive, at the resonant frequency.
2) If the line is operated at a frequency of less than that of the quarter wave frequency, the sending end impedance is capacitive.
3) If the line is operated at a frequency higher than the quarter wave resonant frequency, the sending end of the line is inductive.
4) In order to establish a quarter wave resonance, this within an eighth wave up, or down, span of frequencies around this resonant frequency, two conditions must be met.
One is that the sending end impedance must be LESS than the characteristic impedance of the line.
Second is that the far end impedance must be greater than the characteristic impedance of the line. This is to say, the far end admittance must be less than the characteristic admittance of the line.
When a line is operated at an eighth wavelength it has the property of converting the far end impedance to a resistance equaling the magnitude of the far end impedance, this at the sending end of the line. Marconi used this in his flat top at KET Bolinas, and to a certain extent this may be happening in the Colorado Springs extra coil, but only if expressed in a luminal velocity base. Read Steinmetz, "Oscillations of the Compound Circuit", in "Impulses, Waves, and Discharges", very important info on the refraction and reflection of waves at the transition between two independent transmission structures (or coils).
73 DE N6KPH
P.S. Where did the C.R.I. go? Is that dead now?
The extra coil raising the resonant frequency of the resonant transformer(Pri + Sec) is great. This is what I am looking for. This result means that the extra coil is exhibiting an inductive reactance, indicating its operation is a little beyond its quarter wave frequency. The shunt ring capacitor exists to tune this magnetic component out. Thereby derived is a condition of consonant resonance which both secondary and extra coils are in tune.
Also, do not use L.E.D. use small incandescent lamps like the #327, #44, or #42 number lamps. Use Ne2H lamps as the voltage probes, a neon wire lead lamp on the end of a stick. The coils need to be supplied with enough power to light a neon lamp along the coil. Also, the tiny incandescent lamp with an exploring coil is a good M.M.F. probe. With these the standing wave distribution can be studied on these coils.
In basic terms, if a transmission structure can support travelling and standing waves, a set of relations exist.
1) If the line is quarter wave resonant, the sending impedance is resistive, at the resonant frequency.
2) If the line is operated at a frequency of less than that of the quarter wave frequency, the sending end impedance is capacitive.
3) If the line is operated at a frequency higher than the quarter wave resonant frequency, the sending end of the line is inductive.
4) In order to establish a quarter wave resonance, this within an eighth wave up, or down, span of frequencies around this resonant frequency, two conditions must be met.
One is that the sending end impedance must be LESS than the characteristic impedance of the line.
Second is that the far end impedance must be greater than the characteristic impedance of the line. This is to say, the far end admittance must be less than the characteristic admittance of the line.
When a line is operated at an eighth wavelength it has the property of converting the far end impedance to a resistance equaling the magnitude of the far end impedance, this at the sending end of the line. Marconi used this in his flat top at KET Bolinas, and to a certain extent this may be happening in the Colorado Springs extra coil, but only if expressed in a luminal velocity base. Read Steinmetz, "Oscillations of the Compound Circuit", in "Impulses, Waves, and Discharges", very important info on the refraction and reflection of waves at the transition between two independent transmission structures (or coils).
73 DE N6KPH
P.S. Where did the C.R.I. go? Is that dead now?
Comment