The crossbar user extension outside metering device circuit

Published:2011/7/7 7:22:00 Author:Fiona | Keyword: The crossbar user, extension outside metering device | From:SeekIC

The crossbar user extension outside metering device circuit is shown as above,this device is suitable for HJ-905, HJ-906-type extension outside metering device that the the crossbar user switchboard. The metering device has a easy circuit, low cost and easy maintenance features.As the counting device is for each extension units,for convenience of copy times,it equips with 4-digit electromagnetic counter,it's eye-catching visual. The metering device is composed of pulse shaping,pulse string of gap detection, the first 0 discrimination, pulse string of records, timing and counting circuit and other circuit.



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