timelessbeing
Member
How do I configure a device (~100mA) input so that it:
- powers the load from photovoltaic cells when light is available
- supplements solar power with a cell/battery power when available light is too low or not present
- prevents battery discharge in low light
- charges the battery with available solar energy when load is switched off.
- includes a buck/boost circuit to maintain charging/load voltage/MPP under low light/battery.
- ideally uses off-the-shelf components or even an IC that manages all the power
- Extra: uses externally applied voltage to simultaneous power the load and recharge the battery.
I discovered that those cheap solar lights for your garden contain ICs which are quite clever, but with one major drawback ... they only turn on when it's dark.
- powers the load from photovoltaic cells when light is available
- supplements solar power with a cell/battery power when available light is too low or not present
- prevents battery discharge in low light
- charges the battery with available solar energy when load is switched off.
- includes a buck/boost circuit to maintain charging/load voltage/MPP under low light/battery.
- ideally uses off-the-shelf components or even an IC that manages all the power
- Extra: uses externally applied voltage to simultaneous power the load and recharge the battery.
I discovered that those cheap solar lights for your garden contain ICs which are quite clever, but with one major drawback ... they only turn on when it's dark.