PedalPCB Ge Transistors for Harmonic Perc?

[nate433]

I just saw that PedalPCB is stocking Ge transistors now. Are any of them a good fit for a Harmonic Perc?

Thanks!

 

[swelchy]

1T313V looks like it could possibly work.... would need to research your values a bit.... If you buy about a dozen you'll likely find a match that could work... but..... I've not built one myself and I've heard they kinda require a leaky transistor... which in this case russian transistors are known to not be very leaky.... Where are you located?

 

[swelchy]

my bad... this build requires a PNP and an NPN... The MP38A may have some transistors in the gain range you need... just do a little research on the build and see what values of gain and leakage you need for Q1 & Q2

 

[nate433]

Ya i thought that for harmonic percs you wanted low leakage, low gain Ge.

 

[PedalBuilder]

The MP39B should work, at least on paper. I prefer transistors with an hFE in the 30-50 range (as measured on a DCA55) and as low leakage as possible for Q1 in the Harmonic Percolator.