ILA1062A
The diode bridge, the Zener diode and R10 limit the current into, and the voltage across, the circuit during
line transients.
A different protaction arrangement is required for pulse dialling or register recall.
The DC line voltage can be set to a higher value by the resistor RVA (REG to SLPE).
Figure 5. Typical application of ILA1062A, with piezo-electric earpiece and DTMF dialling.
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