Greetings.
I am putting together a stationary power supply (plugs into a wall socket) for my robot. I plan to use this instead of the on-board batteries when the robot is powered up for extended periods of time. The supply will connect to the robot through an umbilical cord, so I obviously do not plan on the robot physically moving during these periods.
I would like to be able to switch between the batteries and stationary supply while the robot is powered up. One idea I had was to use a DPDT relay or switch to toggle between the two, but I need a way to supply current while the contacts are flying. I wondered if just a big capacitor wired in series with a resistor to limit the inrush current would do the trick.
The batteries (4 x 12V SLA) and stationery supply output 48V. The DC-DC converters that supply the various voltages on the robot are rated from 36 to
72V, so they can take a fair amount of input sag without cutting out. The robot typically draws less than 1A at 48V.I am fairly new at this, so I suspect that there are better solutions out there. Any ideas?
Jeff.
P.S. Until I get the "Delete Sender" button working on my email program, replace the references to spam with "bucky" to email me directly.