Current Lover Schematic question

[DFX-PCBS]

Looking at Madbean's Current Lover (Electric Mistress) schematic, Pin 4 of the BBD has just the 10uf coming off it to ground, shouldn't the highlighted net be labelled as VC?

[mth5044]

What makes you say that? The example circuit in the data sheet for the 3007 has a 3u3 to ground coming off of that pin.

[DFX-PCBS]

Oh its just because ive recently seen a schematic of the mn3207 version of the EM and was just wondering

[Fender3D]

Watch out! the schematic posted is not correct.
pin 4 must be connected to Vgg (=Vdd +1, ~1V).
There's nothing providing this voltage on the schemo.. you'll need a 2 resistors or , at least, 1 diode to ground more

[bean]

Watch out! the schematic posted is not correct.
pin 4 must be connected to Vgg (=Vdd +1, ~1V).
There's nothing providing this voltage on the schemo.. you'll need a 2 resistors or , at least, 1 diode to ground more

Actually, at 9v Vgg should be 9-9(14/15) (IIRC) which works out to 0.6v. In practice, Vgg sits a few mV above ground naturally and works pretty much the same without the extra voltage divider. Originally, this project let you choose between MN3007 and MN3207 and it did have a resistor network to set the proper Vgg. When I changed it to MN3007 only I think I tested it the way you see it now and it worked fine (been a few years). But, totally - I probably should have set it up the way you suggest.

(correction - I think it's VC-VC(14/15), so at 15v it does work out to 1v.)