U4030B circuit equivalent, telephone speech circuit.
D Microphone amplifier with
– Symmetrical input
– Privacy function
– Anticlipping D Built in ear protection D Power down i.
D Standard telephone D Fax machine D Answering machine D Cordless telephone
Block Diagram
GT 11 DTMF PRIV MIC1 MIC2 10 .
The U4030B is an electronic speech circuit for standard and feature telephones. It replaces the hybrid transformer, earphone and microphone interface and the supply voltage generation for external components, e.g. dialer or microcomputers. Using the .
Image gallery
TAGS
Download (Size : 142.94KB)