Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: z.s.tar.gz on May 26, 2010, 05:43:40 AM

Title: Shared Power Supply
Post by: z.s.tar.gz on May 26, 2010, 05:43:40 AM

I need to use the same power supply for both my servos and my mcu.
Right now my basic system is:  Solar > LDO Regulator > Supercapacitors > Servos -and- > Charge Pump > mcu and ir sensors.

When I run it though I don't get the full 5.0V out of the charge pump for the mcu. If I use batteries for the servos and seperate them from the power then I get 5.0V on my charge pump which makes everything fine for mcu timing and whatnot.

Is there any way I can fix this to where I only have to use the capacitors?

Title: Re: Shared Power Supply
Post by: Cristi_Neagu on May 26, 2010, 06:29:08 AM

You'll have to tell us for what maximum voltage the capacitors are rated for. Even with an LDO, you need at least 5.6V to get a stable 5V after it.
Also, what voltage does the solar panel outputs?