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device for adjustment of a fernmeldeleitung ordered bidirectional verstaerkerschaltung to fernmeldeleitung.
device for adjustment of a fernmeldeleitung ordered bidirectional verstaerkerschaltung to fernmeldeleitung.
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机译:用于将电信线路有序双向放大器电路调整为电信线路的设备。
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摘要
In this amplifier circuit, separate amplifiers (V1, V2) are arranged in a hybrid amplifier circuit for the two directions of speech transmission. To achieve a higher total gain, the transhybrid loss of each hybrid circuit (G1, G2) is increased in that the hybrid circuit is terminated with a balancing network (NB1, NB2) which contains a circuit, the impedance of which corresponds to the value of the impedance of the local line transformer (OLÜ) closest to the hybrid circuit in the communication line. Furthermore, the balancing network in at least one of the hybrid circuits (NB2) additionally contains a circuit, the impedance of which corresponds to the value of the impedance of a blocking circuit (SPS) arranged in the communication line for charge metering pulses carried via the communication line. IMAGE
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