Hello there,
I am trying to re-engineering a pretty basic circuit for a solar cell outdoor lamp. It's just a diode, resistor, a battery and the solar cell. But it has a four pin IC which I guess is a BJT? Maybe some sort of Darlington configuration? Hope you can shed some light on it.
My immediate guess is that the battery supplies through the resistor current to diode, and the transistor is used to plug in the solar cell when it is not providing current.
I have uploaded a picture of the PCB here:
**broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
Thank you
I am trying to re-engineering a pretty basic circuit for a solar cell outdoor lamp. It's just a diode, resistor, a battery and the solar cell. But it has a four pin IC which I guess is a BJT? Maybe some sort of Darlington configuration? Hope you can shed some light on it.
My immediate guess is that the battery supplies through the resistor current to diode, and the transistor is used to plug in the solar cell when it is not providing current.
I have uploaded a picture of the PCB here:
**broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
Thank you