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Circuits Using Zener Diodes
How can I understand this?
I'm a DIYer in Electronics but there is a problem I can't solve!
I don't know how is it possible for a circuit to to understand that is the rechargeable battery charged or not. (Without ANY TIMER)
As you know it's not possible to understand if a rechargeable battery is charged or not until you use it.
But i want to design a circuit in order to understand the amount of Energy that it has and charge it automatically if the amount of energy is under the need amount. The type of battery that I use is a car battery and its always in use in the circuit. (it could be used by different situations)
I tried to use transistors and zener diodes to design the circuit but t couldn't help because this kind of circuit is just going to show the amount of Energy at the right time not in a long time!
Any help or suggestion will be highly appreciated!
Thanks
What you want to use is called a Battery Gas Gauge IC. These things are readily available for several rechargeable battery chemistries. You build it in to the charge control circuit. The IC uses a simple characterization table to report the state of the battery based on current in, current out, and time
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