11 years, 8 months ago.

Power supply puzzle

Part of my university project is to build an autonomous scalextric car. The power for the mbed comes from the rails of the track however there are crossovers in the track where there is no electrical connection so the mbed loses power and restarts. Does anyone have any suggestions to overcome this

1 Answer

11 years, 8 months ago.

General answer is that you need a UPS (un-interruptible power supply). Depending on your current needs, that could be accomplished in a simple way with a (rechargeable) battery or even a supercap. You need to provide power to the mbed Vin pin from both sources using diodes to prevent shorts between those sources.