Monday, March 8, 2010

Omron Blood Pressure Monitor Irregular Heartbeat

Simple FM radio receiver with TDA7021T

Simple FM radio receiver with TDA7021T Circuit
Here, the simple FM radio receiver based on single integrated circuit IC TDA7021T.



electronic components

R1 = R2 = 10 k ohms 8kΩ2

R3 = 390Ω
C1, C3 = 10nF
C2, C6, C9, C16 = 100nF C4 = 33pF

C5 = 25pF trimmer (Murata type TZB4Z250AB10R00)
C7, C10 = C8 = 820pF 1nF5

C11 = C12 = 1nF

68pF C13 = C14 = 220pF
47μF 10V (Nichicon UWX1A470MCL1GB 5.5mmL chip type)
C15 = L1 = 36nH 3nF3
(4 turns 0.5mm silver-plated wire, inside diameter 4mm, 7mm length) L2 =
1μH, SMD box 0805 (fres> 300 MHz)
IC1 = TDA7021T (SMD SO16 in box)

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