Publisher's Synopsis
Excerpt from Some Experiments With Coupled High Frequency Circuits
Corps buzzer of the 1905 type excited by two storage' cells with a regulating resistance and key in series. The oscillatory circuit which is connected around the break of the buzzer consisted of a variable air condenser C1, having a maximum capacity of microfarads and an inductance L1 of 20 turns of no. 20 wire wound in a coil of approximately 10 cm diameter.4 The value of this inductance was millihenrys.
This circuit, when the buzzer was properly adjusted, gave out very feebly damped oscillations, the logarithmic decrement, when no extra resistance was introduced, being between 1 and 2 percent.
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