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    CSB480e

    Abstract: transistor tip 1050 circuit diagram of speech circuit
    Text: MICROPROCESSOR-CONTROLLED, SINGLE-CHIP-TELEPHONE 1C LB1009-TYPE PRELIMINARY Description The LB1009 requires only a few external components see Figure 10 to provide all of the touch-tone electronic functions. This integrated circuit furnishes ac and dc loop termination for both switchhook states, transmits and receives


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    PDF LB1009-TYPE LB1009 LB1009AE LB1009BE 75-watt EFO-A480K01. CSB480E transistor tip 1050 circuit diagram of speech circuit