Hi Mychaela,
Although not an EE expert, I remember GSM phones from the late 90s
had a big capacitor inside, probably because the batteries at the
time were not capable of such high sure current. Then modern Li-ion
started becoming popular and the need for such capacitor lessened
afaik.
In theory
Hello fellow GSM MS tinkerers,
Question: is there anyone on either ML who has any experience with
powering a GSM MS from USB, or had at least thought about this problem?
We all know the fundamental problem: during Tx bursts the PA in a GSM
MS can suck as much as 2 A, but the current budget of a
