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Std edition Tremolo

Profile:Tremolo-like circuit for audio effects.

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Published Time: 2021-08-18 02:02:38
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Description

Using a 555 timer in astable mode as the control signal to a (4066) bilateral switch, whose input is an amplified audio signal (i.r., from an LM386). The output from the switch resembles tremolo.

 

Runs on +9V.

design drawing
schematic diagram
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PCB
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ID Name Designator Footprint Quantity
1 10uF C1 CASE-A_3216 1
2 1nF C2,C8 C0603 2
3 10nF C3,C6,C7 C0603 3
4 5nF C4 C0603 1
5 680uF C5 CASE-A_3216 1
6 4.7uF C9 CASE-A_3216 1
7 K2-3.6×6.1_SMD KEY1,KEY2 KEY-SMD_2P-L6.2-W3.6-LS8.0 2
8 LED-0603_R LED1,LED2 LED0603_RED 2
9 10 R1 R0603 1
10 220 R2,R3 R0603 2
11 10K R4 R0603 1
12 50K RP1 RES-ADJ-TH_3386P 1
13 20K RP2 RES-ADJ-TH_3386P 1
14 NE555P U1 DIP-8_L9.8-W6.6-P2.54-LS7.6-BL 1
15 LM386N-3 U2 DIP-8_L9.8-W6.6-P2.54-LS7.6-BL 1
16 CD4066BCN U3 DIP14 1

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