nssl_efm_analog_pcb

NSSL Analog PCB

The analog charge amplifier performs the actual coulomb counting for the electric field
measurement and filters the signal before passing it to the rotating electronics for
digitization, synchronization, and logging. This board closely follows the design of
the original instrument and includes a small microcontroller that allows temperature-
independent control of the filter's cutoff frequency.

See the main instrument repo for documentation and the rest of the instrument.