发明名称 |
MATNINGSBRYGGA MED LIKSTROMSKOMPENSERING FOR BADA MATNINGSSTROMRIKTNINGARNA |
摘要 |
A bridge circuit comprising an isolation transformer having six primary windings which are connected so that the voice currents do and the supply currents do not generate, for either direction of current flow, a resulting flux in the core of the transformer. The bridge comprises two transistor circuits which prevent the voice currents from flowing through a supply source connected to the bridge and also balance the bridge circuit so that the influence of longitudinal noise signals which are produced in a transmission line connected to the bridge circuit are suppressed. The direction of the feed current in the transmission line can be reversed by means of the transistor circuits. |
申请公布号 |
SE7906122(A) |
申请公布日期 |
1980.01.20 |
申请号 |
SE19790006122 |
申请日期 |
1979.07.16 |
申请人 |
NV * PHILIPS'GLOEILMPENFABRIEKEN |
发明人 |
E C * DIJKMANS;B * IJFF;A H J * REUVEKAMP |
分类号 |
H04M3/02;H04M19/00;(IPC1-7):H04M19/00 |
主分类号 |
H04M3/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|