Search results - Page 462

… around 50 kHz. He places a small capacitance on the coil's free terminal. The small oscillator is used and a 3/4 inch …

… bay and had succeeded in transmitting wireless telegraph signals over 3 1/2 miles. At a distance of five miles the signals were no longer intelligible. …

… September 3 Tesla excites the extra coil as a free coil with some small inductive coupling. Both the … is experienced. We have done a lot of experiments with the free coil type system and it is a most interesting curiosity … transmitter just described, Tesla now tries the ultimate free coil experiment. In a fashion very similar to that used …

… tries a series of small terminal capacitances to tune the free coil receiver and notes the sparks resulting from this. …

… September 7 A new free coil is wound and tuned by Tesla in just the manner I … for precise tune. Precise tune is a must to make a free coil work well. It is amazing the efficiency that such … effect of body capacitance of the experimenter on the tuned free coil. We find this to be an extreme problem in doing …

… work. We are not told how far he expected to receive signals. …

… winding just in case he wishes to pursue this in the future. By the standard of the old secondary this is a very …

… is quite ingenius, but is of little value in our age of signal generators, digital frequency meters, and …

… once he had secured enough money and guarantees of land and free electricity. It would appear he may ultimately have …

… of the coil and then elevated 2 feet and retuned! Once a free capacitance is clear of the earth and surrounding …