# ELECTRO

Low-noise power supply. **Venue:** SRC TechCon 2024.

ELECTRO is a battery-powered supply for testing sensitive analog chips. Two 18650 lithium cells in series provide isolated DC with no AC/DC switching artifacts.

## Control System

An ATmega32U4 microcontroller runs an RTOS-based control system with cell voltage and temperature monitoring, passive balancing, and over-current protection. Output voltage ranges from 5 V to 8.4 V.

## Performance

3.89 mV peak-to-peak ripple—40% lower than the Agilent E3631A, Keysight E36103B, Siglent SPD3303X-E, and Rigol DP832. Total cost around $80.

- [Download poster (PDF)](/portfolio/pdf/electro-conference.pdf)