EQD Hummingbird Diode Question

[Codeman1407]

Hey guys,

I'm using the layout below to make a Hummingbird, just wanted to know if i can sub the 1n4148 for a 1n400x, since i have a ton of those and no 1n4148. If so, which one? If not, I'll make a radioshack run i guess.

Thanks in advance!

[nocentelli]

It's used only as reverse voltage protection, and since both diodes have the same voltage drop you could use either with no effect on the sound.

[Codeman1407]

Ok cool, Thanks! Used a 1n4004.

[peterg]

If you're can't find a 2N2646 transistor (Q3) (I coundn't find one) and are using 2N6027 instead check of the Skippy Tremolo scheme. It's not a straight swap.

[Codeman1407]

Thanks Peter, but i found a 2n2646 from SmallBear.