Open to consulting
Electrical engineer. Mostly analog and power, some RF, occasional firmware. Based in a small workshop full of oscilloscopes older than me.
About
I design hardware — schematics, boards, and the firmware that keeps them honest. My favorite problems live at the boundary between clean math and messy physics: noise floors, thermal drift, ground loops, the reasons a layout that simulates perfectly still oscillates on the bench.
Previously at a mid-sized instruments company, where I led the analog front-end team for a family of low-noise data acquisition products. Currently taking on a small number of consulting projects around bench instruments and precision measurement.
Selected work
Dual-channel low-noise linear supply
A dual-channel programmable supply built to characterize low-noise analog circuits without contaminating them. LT3045 post-regulators sit downstream of a synchronous switching preregulator, with an LM399 buried-zener reference and a 20-bit ADC for readback. The chassis is machined aluminum, with a shielded partition between the digital and analog domains.
Four-layer PCB, matched inverted-F antenna
A four-layer PCB carrying a Nordic nRF52840, a 27 dBm PA, and an inverted-F antenna tuned against a copper cutout. The layout took eleven revisions to clear FCC intentional-radiator limits without resorting to a shield can. The bring-up notebook fills roughly half a Muji A5.
Field-oriented, 24 V / 30 A
A sensorless field-oriented controller for small brushless motors. The back-EMF observer runs on the STM32's CORDIC coprocessor; gate driver is a DRV8323. Startup down to 200 RPM works through a hybrid open-loop-to-closed-loop transition that took an embarrassing number of afternoons to tune.
Stack
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