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參數(shù)資料
| 型號： | LC75421M |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Electronic Volume Controller for Cars |
| 中文描述： | 汽車電子音量控制器 |
| 文件頁數(shù)： | 16/24頁 |
| 文件大小： | 392K |
| 代理商： | LC75421M |
Treble Band Circuit
The shelving characteristics can be obtained for the treble band.
The equivalent circuit and calculation formula during boost are indicated below.
Calculation example 1
Specification Set frequency: f = 10000 Hz
Gain during maximum boost: G
+ 14 dB
= 14 dB
Let us use R1 = 11.030 k
and R2 = 45.054 k
.
The above constants are inserted in the following formula.
No. 6866-16/24
LC75421M
C
R1
R2
C
=
R
2
)
2
–
R
1
2
1
2
π
f
10
G
/20
– 1
(
=
1
2
π
10000
45054
5.01–1
≠
6800(
pF
)
(
)
2
– 11030
2
R
2
R
1
2
+
(1 /
ω
C
)
2
G
=
20
×
LOG
10
1
+
Simulation Results
Setting
f = 10 kHz
f = 1 kHz
14 dB
13.95
7.42
12 dB
11.98
6.96
10 dB
10
6.34
8 dB
8
5.5
6 dB
6
4.43
4 dB
4
3.13
2 dB
2
1.64
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