| 摘要 |
<p>1,210,152. Hybrid circuits. INTERNATIONAL STANDARD ELECTRIC CORP. 11 July, 1968 [18 July, 1967], No. 33037/68. Heading H4R. A hybrid arrangement for connecting a source G and a receive amplifier terminals FF to a two wire line includes a balancing network N comprising a transistor T controlled, by its connection to a current transformer in the two wire line, to take an identical current to that flowing in the two wire line and to ensure perfect antisidetone balance.</p> |
