Deluxe Electric Mistress Clock Frequency

[DrAlx]

Look at the DPDT switch and you see the 47k has no effect on FM mode.

EDIT: I think you mean the 22k resistor. Yes you can lower that.

[Scruffie]

Are we looking at the same schematic? I don't see a 22k resistor and the 47k effects the gain in both modes.

Edit: I see now, the metzgerralf schematic lists it as 22k, I'm looking at the factory schematic which says it's 47k.

[DrAlx]

 I'm looking at the Metzger schematic.

[miketbass]

Just for clarity this is the schematic Ive been referencing. I see a 47k tied to the switch?


EDIT I see it now, sorry Im at work and had just glanced at it.

[Scruffie]

I'll use that one from now on so we're all on the same page.

The 22k from pin 6.

[miketbass]

So the plot thickens... There is no 22k or any other resistor mounted! No component in that position. Heres a board shot of the bottom of the LM324 leading to the range pot, with pin 1 indicated on the pcb (nice touch!). Notice the strangely flat solder pads between pin 6 and 7 leading to the lug of the pot..... I could drop a resistor in there but the factory left it out.


EDIT Im gonna leave my mis read of the pcb up here, Ive been working 12 hour days so things are a little fuzzy. I found that the factory had installed a 29k resistor instead of a 22k, strapping a 100k in parallel got me up to 7.8v of CV and I can trim the range down to 35Khz in filter matrix mode. Auto sweep is 40Khz - 650Khz+, Ill have a closer look at it tomorrow. For now I am satisfied, my other DEM has a much more pitiful sweep and that will be sorted next.

[j_flanders]

If your 'camera device' has a setting with a 'flower' it's best to use that when shooting close ups.



Also, no Flash works better with shiny objects...

[Scruffie]

So the plot thickens... There is no 22k or any other resistor mounted! No component in that position. Heres a board shot of the bottom of the LM324 leading to the range pot, with pin 1 indicated on the pcb (nice touch!). Notice the strangely flat solder pads between pin 6 and 7 leading to the lug of the pot..... I could drop a resistor in there but the factory left it out.


EDIT Im gonna leave my mis read of the pcb up here, Ive been working 12 hour days so things are a little fuzzy. I found that the factory had installed a 29k resistor instead of a 22k, strapping a 100k in parallel got me up to 7.8v of CV and I can trim the range down to 35Khz in filter matrix mode. Auto sweep is 40Khz - 650Khz+, Ill have a closer look at it tomorrow. For now I am satisfied, my other DEM has a much more pitiful sweep and that will be sorted next.

Hooray! Congratulations.

But 29k? What the hell kind of value is that?