(under subclass 347) Subject matter where the demodulating element includes conductors loosely resting against each other in imperfect conducting contact, the conductors being of such a material and shape that passage of a high frequency current therethrough modifies the conducting contact.
(1) Note. Usually the demodulating element is formed from loosely packed metallic granules, whose contact resistance decreases upon passage of a high frequency current therethrough. However, the contact resistance may increase under these conditions to constitute an anticoherer, which is also included here.
(2) Note. The coherer often includes structure, namely, a decoherer, for breaking the coherence established by the high frequency current.
SEE OR SEARCH CLASS
178, Telegraphy,
117, for an alternating current teles:graphic system utilizing a coherer.
257, Active Solid-State Devices (e.g., Transistors, Solid-State Diodes), 43, for active solid-state type coherers.
