quoted-printable

>> Could you draw a simple schematic on how this "clamp" works? I'm not really
>> understanding it.

Cct ex TI datasheet
TL431 December 2005.

R1, R2 set clamp voltage.
431 turning on turns on transistor and clamps voltage.

Applying  a very fully charged LiIon to this circuit may be exciting. Maybe not.
Resistor in battery lead can be used - maybe 1 ohm, to reduce fun and
games prospects.


    R