Title: Audio phase detector
Application Number: 200610035944 Application Date: 2006.06.14
Publication Number: 1908600 Publication Date: 2007.02.07
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01H11/06;G01H17/00
Applicant(s) Name: Li Zhi Address:
Inventor(s) Name: Li Zhi
Attorney & Agent: liang guojie
Abstract:
    The disclosed audio phase detector comprises a single-tone signal generator and a phase detection device, wherein the 3 and 6 feet of the generator connect with C7, R20 and D4; the 5th foot connects with R17-R19; the 1st foot connects with R12 and C3 and the base of Q1 for amplification; the VR1 regulates the output for detection signal from J1; the MIC1 of phase detection device connects with C9, the 5th foot of IC1 connects with R3, C2 and R4; the 7th foot connects with R6, 6th and 3rd feet of IC2; the 5th foot of IC2 connects with R7 and R9, the 1st foot connects with D1, 9th foot of IC2; the 11th foot of IC3 connects with D3, R21, R15 and the 1st foot; the collector of Q2 connects with R22, the base connects with R21; and the emitter grounds.
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