The Swift satellite has been on orbit for ten years. It was the first project I worked on at Goddard Space Flight Center. I designed and tested the ultra-low-noise power regulator assemblies that run the detector assemblies in the Burst Alert Telescope. I did the circuit design for the variable output high-voltage regulators that provide bias power to the sensors in the BAT detector assemblies. The BAT sensor array is held at a constant temperature (298 K, ± 0.5 K). I designed the pulse-width modulation regulators used in the thermal control system. The same type of PWM is used in the thermal controls for the star trackers which are a part of the satellite’s navigation system. Given that the mission design life was two years, it’s nice to see that my first bits of work are holding up.
Video Credit: NASA