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我县支局端安装的载波电话终端机,其电源由县局利用幻线电路远供。一般转电线圈是安装在载波机线路盘之后,当外线发生入地障碍时,易造成线路盘烧坏。 另外,远供电源供耗电量小的TX—3G型机尚能正常工作。后来换成耗电量较大的ZM203型机后,远供电源的电流就供不上了。为了解决上述问题,我作了如下改动(如图):附图改进后接法。
I county branch office installed carrier phone terminals, the power supply by the county bureau using magic line far. General transfer coil is installed in the carrier wave circuit board, when the outside line occurs when the barrier, easy to burn the circuit board. In addition, far from the power for small power TX-3G-type machine can still work properly. Later replaced by a larger power consumption ZM203-type machine, far from the current on the power supply on the. In order to solve the above problems, I made the following changes (pictured): Improved drawings attached.