Comment by ptsd_isv
11 hours ago
You can negotiate charging with essentially a single resistor. Deciding when to stop / balancing cells etc is the harder problem.
11 hours ago
You can negotiate charging with essentially a single resistor. Deciding when to stop / balancing cells etc is the harder problem.
> You can negotiate charging with essentially a single resistor.
For USB sure.... I'm pretty sure this doesn't charge over USB.
I'm surprised, and you'll be surprised, but this is true!! I gotta start actually looking shit up before saying something....
https://en.wikipedia.org/wiki/SAE_J1772#Signaling
J1772 is significantly more than a single resistor. And, while the signaling is analog, all practical implementations are going to use digital circuitry to generate and detect it.
Well, OP Amps are technically "analog" too.
Well, they could be using vacuum tubes…