hi,
I would like to understand how the various PowerBank work for mobile phones ....
Let me explain better, I wanted to feed a classic flashing light with
The usual timer with IC 555 and an LED diode, all work with 5 volt.
Except that I connected it to the 4 different powerbank that I have but nothing, off !!!
With the tester in fact I read from 2 to 3 volts out of the way ....
If, however, the various keyboards, a miracle, the 5 volt and the circuit comes out
Outside it works!
Only then after a while ... everything goes out and the 5 volts still disappear.
So there must be something to do on the connector for I think
make Powerbank understand that there is an external load and to continue
To give the 5 volts out of the way, right?
But how should I do, maybe some resistance or ... but where?
help .... who knows more? Thank you 73?
