Hello all!
I'm trying to design a circuit in which I can charge a rechargeable AAA 1.5v battery with a small 0.5v solar cell (space is limited so only enough room for one solar cell). Now I realize I'll need at least 1.5v-1.8v to charge a AAA battery--so I was thinking of having the solar cell charge a capacitor up to the required 1.8v's and then discharge this energy into the battery; repeating this process until the battery is fully charged.
Another requirement is that the device may at times be using power from the battery simultaneous to while it's charging; would there be any issues or possible damage to the device? If so, what kind of protection circuit should I implement?
Any advice/tips or example circuits you can help me out with would be great!
I'm trying to design a circuit in which I can charge a rechargeable AAA 1.5v battery with a small 0.5v solar cell (space is limited so only enough room for one solar cell). Now I realize I'll need at least 1.5v-1.8v to charge a AAA battery--so I was thinking of having the solar cell charge a capacitor up to the required 1.8v's and then discharge this energy into the battery; repeating this process until the battery is fully charged.
Another requirement is that the device may at times be using power from the battery simultaneous to while it's charging; would there be any issues or possible damage to the device? If so, what kind of protection circuit should I implement?
Any advice/tips or example circuits you can help me out with would be great!