| 摘要 |
<p>CARBON COATED ELECTRICAL CIRCUIT MEMBERS A layer of finely divided carbon, colloidal graphite, in a carrier, for example a vinyl polymer, is bonded to a support member. The layer provides a conductive layer which is extremely effective as a contact surface, both as a static contact as in electrodes of a carbon microphone or as a dynamic contact surface as in a pushbutton switch. It can also provide a conductor path in an electrical circuit. It can be used to replace gold plating and use of silver as a conductor.</p> |
