Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "daemons_ca" <daemons_ca@...> wrote:
>
> 
> 
> James,
> 
> I got the TL901 after all. Opened it up today and I see what you mean about the SMT resistors.
> So which pin did you use on the connector? From what I can tell, white is return(common), black is 3mil, and brown 5mil.
> Black goes to 6K8, and Brown to 3K3. So I'm guessing the lower the resistance the hotter?
> I'll want to use a 5K multi-turn trimmer if that's the case.
> 
> The lowest resistor on the PCB is a 1K5. What temperature did you get using that? Did you disconnect the other switch? If not, what position did you put it in?
> 
> Marc



It's been a while since I've had it open so I forget some of the details but the pins were labeled on the silkscreen and the one I used was "HH" which I believe was 1.5K.

I installed a SPDT toggle switch to select between the original thickness switch and the HH pin. Any number of other methods would work just as well though.