Publisher's Synopsis
Excerpt from The Comparative Sensitiveness of Some Common Detectors of Electric Oscillations
The exciting circuit1 in all the experiments is shown in Fig. I. Here B is a buzzer run by two storage cells with considerable resistance in series. The oscillatory circuit consists of a variable air condenser C1 having a maximum capacity of microfarads, and for moderate wave lengths an inductance L1 of milli henries. These are connected directly across the contact of the buzzer.
The action of the circuit is as follows: When the buzzer contact is broken, the condenser C1 is charged and this charge is retained until the contact is again closed, when the condenser discharges through the contact, producing oscillations in the circuit LIC 1. As these oscillations take place in a closed metallic circuit, they are very feebly damped unless extra resistance is introduced at R.
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