Prototyp_V1.0
Advanced Member level 2
Theory is this. I've got a poor batery, say 9V and its almost empty, but the voltage is still normal when unloaded. Say it's maximum current is 5 mA when shortcircuited.
And I got a beeping device* that runs on everything from 3 volts and above that. This (whatever it is) draws 50mA in order to work. The idea is that the 9V battery will provide the power. It doesn't need to run seameless, it may as well pulsate. The idea is that it's running as long as the battery can provide enough voltage.
So the solution I've thinking on is that the battery charges a quite large capasitor. And when the voltage over the capasitor reaches say 8 volts, then the capasitor discharges quickly over the beeper. And then the cyclus repeats.
* Beeping device or a lamp. It doesn't matter as long as it generate sound or light.
And I got a beeping device* that runs on everything from 3 volts and above that. This (whatever it is) draws 50mA in order to work. The idea is that the 9V battery will provide the power. It doesn't need to run seameless, it may as well pulsate. The idea is that it's running as long as the battery can provide enough voltage.
So the solution I've thinking on is that the battery charges a quite large capasitor. And when the voltage over the capasitor reaches say 8 volts, then the capasitor discharges quickly over the beeper. And then the cyclus repeats.
* Beeping device or a lamp. It doesn't matter as long as it generate sound or light.