| 摘要 |
The device consists of a transmitter and a receiver. The transmitter utilizes multiple frequencies generated by a binary counter divider and includes a carrier frequency, an I.F. frequency, an audible tone frequency, a frequency which gives the ability to use battery power efficiently and a frequency which gives the ability of easy interpretation of the results. It includes a Norgate controlling the ON and OFF state of a power switch which in turn controls a capacitive driver source through a matching transformer to the "load". The receiver consists of a series of sequential filters each tuned to the three highest encodements of the transmitter and operating a visual and audible transducers on the receiver.
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