參數(shù)資料
型號: LC75343M
元件分類: 音頻控制
英文描述: 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO36
封裝: 0.375 INCH, MFP-36
文件頁數(shù): 18/28頁
文件大?。?/td> 413K
代理商: LC75343M
Calculation of External Equalizer Constant
Bass/Super Bass Circuit
The equivalent circuit and the formula for calculating the external RC with a mean frequency of 1000 Hz are shown
below.
Bass/super bass band equivalent circuit block diagram
Calculation example
Specification Mean frequency: f0 = 1000 Hz
Gain during maximum boost: G = 10 dB
Using R1 = 0, R2 = 33.097 k
, and C1 = C2 = C,
We obtain R2 from G = 10 dB.
We obtain C from mean frequency f0 = 1000 Hz.
We obtain Q.
No. 6867-25/28
LC75343M
C1
R1
R2
R3
C2
G
+10 dB
= 20 × LOG
10
1
+
R2
2R3
R3
=
R2
2 10G+10dB/20 –1
33097
2
× (3.162 – 1)
=≠ 7.6 K
f 0
=
R3R2C1C2
1
2
π
C
==
1
2
πf0 R3R2
1
2
π × 1000 33097 × 7600
≠ 0.01 F
Q
=
R3R2
2R3
1
≠ 1.04
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