I'm setting up a hobby project where I have a DC motor running from a small solar panel.
I've tested connecting the panel directly too the motor and it works great.
The problem is that in bright light the panel could theoretically generate too much power.
I'm wondering if there is a simple way to clamp the power to some maximum value.
I know you can buy circuits that regulate solar power for charging batteries.
Is there anything similar that is appropriate to use on a motor?
I've read that adding a battery and a charging circuit could solve my problem but since I'm only using the motor during the day I'm curious what other options might exist.
I don't have an exact specification for the motor but it was originally running off 8 AA batteries in series so I think that's around 12V 50mA. The solar panel's maximum output is 15V 100mA. I know I won't get that in practice very often, but if possible I'd still like to have something in place.
The motor doesn't need to spin at a constant rate so if the voltage varies with the amount of sun that's ok as long as it's within a safe operating range.