PEB 2023

PEF 2023

Overview

Semiconductor Group

10

08.97

In figure 3 the S-transformers are replaced by the PEB/F 3023 which is called S-Feeder.

When using the S-Feeder a capacitive coupling between S-receive-path and the S-

Transceiver is necessary. For the S-transmit-path the S-Feeder need an extra 2.4V

transmitter supply voltage. Because of the DC-voltage-drop on the S-Feeder (about 2V

and 4V) the input voltages V

Figure 3

PEB/F 2023 in ISDN-Concept

U

Transceiver

S

Transceiver

HDLC

Controller

DC/DC

Converter

PEB 2023

PEF 2023

AC/DC

Converter

CODEC

Interface

AC 230V

44V

NPM

40V

RPM

5V

µ.C.

S Feeder

PEB 3023

2.4V

reverse Polarity

Current

Limiter

Current

Limiter

Reset

Generator

S

U