That's exactly it. The circuit is designed to charge the NiCad
battery whenever the synth is turned on. That way, the battery will
have a full charge when the synth is turned off. At the time, Li-Ion
batteries weren't around, so there was no good way to have a battery
that would last a long long time without recharging.
Guess what happens when you use a (non-rechargeable) Li-Ion battery in
a charging circuit? It blows up.
I'm really surprised that you can't find a tech that could explain
that to you. It's really quite simple.
The resistor is part of the charging circuit. The diode will be
installed so that it disables the charging circuit, letting power
LEAVE the battery, but not ENTER the battery.
On 5/10/07, spistrich <wasteking@verizon.net> wrote:
> My polysix needs a new battery... the Old Crow site describes a
> possible replacement with a 3v lithium disc cell..... can you use a 3.6
> lithium solder-in 1/2 aa cell ? and if so , must you do the
> capacitor and resistor to diode transplant? The reasoning for this
> mod is not explained in that site and i cant find a tech who can
> explain it to me... why cant you just switch the battery? is there a
> diffrence with a lithium vs. nicad? (i have the reccomended diode,
> but wonder why you must do it?)
>
>
>
> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> Yahoo! Groups Links
>
>
>
>
--
.sig
-Chromatest J. Pantsmaker
http://www.chromatest.net