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Such currents are called feed-back or regenerative currents and when circuits are so arranged as to cause the currents to flow back through the detector tube the amplification keeps on increasing until the capacity of the tube itself is reached. It is like using steam over and over again in a steam turbine until there is no more energy left in it.
Where only one vacuum tube is used for producing both frequencies you need only a regenerative, or feed-back receptor; then you can tune the aerial wire system to the incoming waves and tune the closed circuit of the secondary coil so that it will be out of step with the former by 1,000 oscillations per second, more or less, the exact number does not matter in the least.
While this regenerative set is the simplest that will give anything like fair results it is here described not on account of its desirability, but because it will serve to give you the fundamental idea of how the feed-back circuit is formed. Connecting Up the Parts.
Where only one vacuum tube is used for producing both frequencies you need only a regenerative, or feed-back receptor; then you can tune the aerial wire system to the incoming waves and tune the closed circuit of the secondary coil so that it will be out of step with the former by 1,000 oscillations per second, more or less, the exact number does not matter in the least.
When your eyelids actually become heavy or when your eyes actually begin to water, you intensify these feelings by repeating affirmative suggestions along these very lines. This is known as "the feed-back technique" and helps to reinforce the actual condition that exists. Proceeding in this way hastens the actual closing of the eyes and attainment of the hypnotic state, per se.
And when men are laid off they don't have money to spend, so retail trade slacks off some more, and that backs up inventories some more, and that backs up orders to factories and makes unemployment and hurts retail trade again. It's a feed-back. See?" It was Hoddan's grandfather's custom, at this point, to stare shrewdly at each of his listeners in turn. "But suppose somebody pirates a ship?
Should you find it necessary to start your hand rising, use the feed-back technique to continue the movement. You can give yourself the following suggestions: "One ... My right hand is beginning to rise. Two ... My right hand is very, very light, and I am getting an irresistible urge to slowly raise it. Three ... This feeling is getting stronger and stronger.
This "feed-back" regeneration enormously increased the loudness of the receiving signals, and its value to the boys was demonstrated one night when the air was unusually free of static and they clearly heard the signals from Nauen, Germany, and the Eiffel Tower, Paris.
Such currents are called feed-back or regenerative currents and when circuits are so arranged as to cause the currents to flow back through the detector tube the amplification keeps on increasing until the capacity of the tube itself is reached. It is like using steam over and over again in a steam turbine until there is no more energy left in it.
Once again, you practice the technique of visual-imagery, tapping your experiential background for this feeling. You can recall how it feels when your hand goes to sleep. Once you get an initial feeling of lightness, tingling or numbness, reinforce this feeling by the feed-back technique as you did with the eye closure test. As you practice this procedure, it will work with greater effectiveness.
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