发明名称 D.C. COMPENSATED SUBSCRIBER INTERFACE TRANSFORMER FOR TELEPHONE SYSTEM
摘要 <p>A miniature subscriber interface transformer circuit having a d.c. compensation circuit incorporated on one or both sides is provided with means for applying a high voltage, low frequency ringing signal to the subscriber line.</p>
申请公布号 CA975479(A) 申请公布日期 1975.09.30
申请号 CA19720153737 申请日期 1972.10.12
申请人 GTE AUTOMATIC ELECTRIC LABORATORIES INCORPORATED 发明人 MACRANDER, MAX S.
分类号 H04M19/00 主分类号 H04M19/00
代理机构 代理人
主权项
地址