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Pearl Flanger Pcb

Started by Sylvain Ramone, April 21, 2023, 09:09:49 PM

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Sylvain Ramone

weird effect! I didn't know how to configure it so I left it with these values ​​for the trimmers
Trim1: 0 - 6.22 - 9.2
trim2: (var) 3.77 - 3.77 4.1
trim3: 5.08 -5.08, 5.08

notes:
- I used a 220pf ceramic capacitor for c6, a 200k trimmer for trim2 and a 0.22uf for c20

-I connected, as with the pearl chorus, r18 to ground
- for Q2,Q3 and Q4 I didn't have any 2n3904, so i used BC549 inverted

have fun!!

dimensions 67 x 58 mm
https://docdro.id/fDfRqAQ




Chillums

Did you use mn3207 or mn3007 on your build?  Shouldn't the mn3207 be biased to ground?   Nice layout nonetheless!

CheapPedalCollector

Quote from: Chillums on April 22, 2023, 05:04:51 AM
Did you use mn3207 or mn3007 on your build?  Shouldn't the mn3207 be biased to ground?   Nice layout nonetheless!

They can be biased "inverted" like a PNP transistor where the collector is biased to ground.

Chillums

Ahhh, I gotcha..... That makes sense.