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LW1DSE > TECH 15.07.12 19:34l 91 Lines 4081 Bytes #999 (0) @ WW
BID : 4575-LW1DSE
Read: GUEST
Subj: Multiple Feedback Audio Filters (MFB) (CP437)
Path: IZ3LSV<IV3SCP<SR1BSZ<ON4HU<CX2SA<CX4AE<LU2FHX<LW1DRJ<LW8DJW
Sent: 120714/1706Z 4152@LW8DJW.#1824.BA.ARG.SA [Lanus Oeste] FBB7.00e $:4575-LW
From: LW1DSE@LW8DJW.#1824.BA.ARG.SA
To : TECH@WW
[――― TST HOST 1.43c, UTC diff:5, Local time: Mon Jul 09 11:27:18 2012 ®®®]
Multiple Feeback Filters
ΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝ
Low pass filter:
ΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝ
R3 1 1 R3
Fc = ΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔ Q = ΔΔΔΔΔ K = -ΔΔΔΔ
ΪΔΔΔΔΔΔΔΔ²²²ΔΔΔΏ 2γ ϋ(R2 R3 C1 C2) 2 R1
³ ³
³ ³³ ³
³ ΪΔΔΔ΄ΓΔΔΔ΄
³ ³ ³³ ³
R1 ³ R2 ³ C2 ³ 1
Vi ³ ³ ³\ ³ ΔΔΔΔΔΔΔΔΔΔΔΔΔ
oΔΔ²²²ΔΕΔ²²²ΔΑΔΔ΄-\ ³ C1 C2 R1 R2
³ ³ \ ³ Av = ΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔ
³ ³ \ΔΑΔΔo 1 1 1 1 1
ΔΑΔ C1 ³ / Sύ + SΔΔΔ (ΔΔΔ + ΔΔΔ + ΔΔΔ) + ΔΔΔΔΔΔΔΔΔΔΔΔ
ΔΒΔ ³ / Vo C1 R1 R2 R3 C1 C2 R2 R3
³ ΪΔΔ΄+/
³ ³ ³/
³ ³
ΔΑΔ ΔΑΔ
/// ///
Band pass filter:
ΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝ 1 1 1 1
C1 Cf = ΔΔΔΔ ϋ(ΔΔΔΔΔΔΔΔΔΔ (ΔΔΔ + ΔΔΔ))
³³ 2γ R3 C1 C2 R1 R2
ΪΔΔΔΔΔΔΔΔΔ΄ΓΔΔΔΏ
³ ³³ ³
³ ³
³ ΪΔΔΔ²²²ΔΔ΄
³ C2 ³ ³
R1 ³ ³ R3 ³ R3 C1 1
Vi ³ ³³ ³ ³\ ³ K = - ΔΔΔΔ ΔΔΔΔΔΔΔΔΔ Q = ΔΔΔΔΔ
oΔΔ²²²ΔΕΔΔ΄ΓΔΑΔΔ΄-\ ³ R1 C1 + C2 2
³ ³³ ³ \ ³ Vo
³ ³ \ΔΑΔΔo
² R2 ³ /
² ³ / 1
² ΪΔΔ΄+/ S ΔΔΔΔΔΔΔ
³ ³ ³/ R1 C1
³ ³ Av = ΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔ
ΔΑΔ ΔΑΔ 1 1 1 1 1
/// /// Sύ + S(ΔΔΔΔΔΔΔ + ΔΔΔΔΔΔ) + ΔΔΔΔΔΔΔΔΔΔ(ΔΔΔΔ + ΔΔΔΔ)
R2 C3 R3 C1 R3 C1 C2 R1 R2
High pass filter:
ΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝ
C3
³³
ΪΔΔΔΔΔΔΔΔΔ΄ΓΔΔΔΏ 1 1 C1
³ ³³ ³ Fc = ΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔ Q = ΔΔΔΔΔ K = -ΔΔΔΔ
³ ³ 2γ ϋ(R1 R2 C2 C3) 2 C3
³ ΪΔΔΔ²²²ΔΔ΄
³ ³ ³
C1 ³ C2 ³ R2 ³
Vi ³³ ³ ³³ ³ ³\ ³
oΔΔ΄ΓΔΔΕΔΔ΄ΓΔΑΔΔ΄-\ ³
³³ ³ ³³ ³ \ ³ Vo
³ ³ \ΔΑΔΔo
² R1 ³ /
² ³ / C1
² ΪΔΔ΄+/ -Sύ ΔΔΔΔ
³ ³ ³/ C3
³ ³ Av = ΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔΔ
ΔΑΔ ΔΑΔ C1 + C2 + C3 1
/// /// Sύ + SΔΔΔΔΔΔΔΔΔΔΔΔΔΔ + ΔΔΔΔΔΔΔΔΔΔΔΔΔ
R2 C2 C3 R1 R2 C2 C3
ΙΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝ»
Ί Compilled from Internet. Translatted & typed in ASCII by LW1DSE Osvaldo Ί
Ί F. Zappacosta. Lomas de Zamora, Lomas de Zamora, Buenos Aires, Argentina. Ί
Ί Made with MSDOS 7.10's Text Editor (edit.com) in my AMD's 80486. Ί
Ί January 04, 2012 Ί
ΘΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΌ
ΙΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝ»
Ί Osvaldo F. Zappacosta. Barrio Garay (GF05tf) Alte. Brown, Bs As, Argentina.Ί
Ί Mother UMC ζPC:AMD486@120MHz, 16MbRAM HD IDE 1.6Gb MSDOS 7.10 TSTHOST1.43C Ί
Ί Bater΅a 12V 160AH. 9 paneles solares 10W. Ί
Ί oszappa@yahoo.com ; oszappa@gmail.com Ί
ΘΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΌ
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