3通道频谱分析仪电路 (3 Channel Spectrum
3通道频谱分析仪电路 (3 channel spectrum analyzer)
this 3 channel 15 led spectrum analyzer is the perfect addition to any audio amp project. it produces fantastic displays on three led bars that can be individually adjusted for any particular frequency range. the circuit will take line level output from most any audio source, and operates on 12v dc. this means that it can even be run in a car.
schematic
parts:
part
total qty.
description
substitutions
r1
1
100k 1/4w resistor
r2
1
820k 1/4w resistor
r3, r14, r16, r18
4
2.2 meg 1/4w resistor
r4, r5, r6
3
22k pot
r7, r8, r9, r25, r27, r29
6
10k 1/4w resistor
r10, r11, r12
3
680 ohm 1/4w resistor
r13. r15, r17
3
580k 1/4w resistor
r19, r20, r21
3
39k 1/4w resistor
r22, r23, r24
3
47k 1/4w resistor
r26, r28, r30
3
33 ohm 1/4w resistor
c1, c5, c6
3
0.012uf polystyrene capacitor
c2, c9, c10, c11
4
3.3uf electrolytic capacitor
c3, c4
2
0.0022uf polystyrene capacitor
c7, c8
2
47nf polystyrene capacitor
c12, c13, c14
3
0.47uf electrolytic capacitor
c15, c16, c17
3
22uf electrolytic capacitor
d1, d2, d3
3
1n4002 silicon diode
d4, d5, d6, d8, d8
5
green led
d10, d11, d12, d13, d14
5
amber led
d16, d17, d18, d19, d20
5
red led
u1
1
lm3900 quad op amp
u2, u3, u4
3
an6884 bar graph ic
misc
1
board, wires, sockets for ics
notes:
1. the circuit expects line level inputs. if you connect it to speaker level, you will have to readjust the circuit every time you change the volume.
2. after the circuit is connected, apply power and signal. now adjust the pots until the corresponding group of leds reacts.
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this 3 channel 15 led spectrum analyzer is the perfect addition to any audio amp project. it produces fantastic displays on three led bars that can be individually adjusted for any particular frequency range. the circuit will take line level output from most any audio source, and operates on 12v dc. this means that it can even be run in a car.
schematic
parts:
part
total qty.
description
substitutions
r1
1
100k 1/4w resistor
r2
1
820k 1/4w resistor
r3, r14, r16, r18
4
2.2 meg 1/4w resistor
r4, r5, r6
3
22k pot
r7, r8, r9, r25, r27, r29
6
10k 1/4w resistor
r10, r11, r12
3
680 ohm 1/4w resistor
r13. r15, r17
3
580k 1/4w resistor
r19, r20, r21
3
39k 1/4w resistor
r22, r23, r24
3
47k 1/4w resistor
r26, r28, r30
3
33 ohm 1/4w resistor
c1, c5, c6
3
0.012uf polystyrene capacitor
c2, c9, c10, c11
4
3.3uf electrolytic capacitor
c3, c4
2
0.0022uf polystyrene capacitor
c7, c8
2
47nf polystyrene capacitor
c12, c13, c14
3
0.47uf electrolytic capacitor
c15, c16, c17
3
22uf electrolytic capacitor
d1, d2, d3
3
1n4002 silicon diode
d4, d5, d6, d8, d8
5
green led
d10, d11, d12, d13, d14
5
amber led
d16, d17, d18, d19, d20
5
red led
u1
1
lm3900 quad op amp
u2, u3, u4
3
an6884 bar graph ic
misc
1
board, wires, sockets for ics
notes:
1. the circuit expects line level inputs. if you connect it to speaker level, you will have to readjust the circuit every time you change the volume.
2. after the circuit is connected, apply power and signal. now adjust the pots until the corresponding group of leds reacts.
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MAX5700双通道DAC的家庭内部电压基准和SPI接口
威顿晶磷完成亿元级Pre-IPO轮融资
入耳降噪蓝牙耳机哪个牌子好？四款主动降噪功能耳机推荐
贾跃亭投资的Lucid Motor与LG共同生产车规锂电池
3通道频谱分析仪电路 (3 Channel Spectrum
音频技术术语
图文并茂，带你了解配电室开关柜无线测温系统
简单易制的声控电路工作原理
三大运营商 11 月份移动和联通用户均有不同程度减少
用手柄拿5杀 北通P1手柄入手评测
三星第8代V-NAND已开始量产
如何根据高压电驱动系统的电磁干扰特性
华为P10闪存门、内存门最新消息：华为P10缩水门事件持续发酵，华为Mate9也跟着躺枪
电力拖动系统中，电动机如何选择？
与UWB超宽带定位技术相比，蓝牙AOA定位技术有哪些优势？
无人机编程对孩子的帮助是很大的，可以归纳为10点
OI系列功率放大器的功能特点及应用范围
卷绕电池特点_卷绕电池的优缺点
IBM正在与AOS合作为物流业务开发一个区块链技术的解决方案