• [WORK JOB] - Ethernet Breakout PCB

    10/09/2022 at 00:30 • 0 comments

    Ethernet breakout board for an esoteric piece of equipment with a very frustrating physical interface. Literally provides access to every single connection in the cable to simplify the hardware portion of the troubleshooting. Not very interesting schematic-wise and a very tedious layout process with regards to the controlled differential impedance on the Ethernet lines.

  • [WORK JOB] - Deployable Lab Power Supplies (Stock Image)

    08/18/2022 at 13:44 • 0 comments

    Contained within a 9U deployable rack, these two commercial power supplies (1 rail at 1200W/50A/60V/1600VA and 4 rails shared at 420W/24A/70V/650VA) can be taken practically anywhere. In order to protect from voltage surges, these 'universal input' supplies are operated at 120V instead of 240V (via a rack mounted 2400VA 2:1 transformer), which massively increases input voltage headroom. This, combined with the inrush limiting resistor (with relay bypass) and over voltage suppression/disconnection, ensure that the deployable supplies are effectively bullet-proof and also free of start-up transients. Doing it this way also has the added benefit of a 120V output via NEMA 5-20R receptacles. Input to the box is 240V +10%/-15% at 50Hz.

  • [WORK JOB] - Basic Relay Box

    05/02/2022 at 04:23 • 0 comments

    As basic and as fun as it comes, this box contains 3 relays that simply pass through power on three different voltage rails. Isolation is about 250V and the current rating is 10-15A depending on factors. Power by USB 5V and TTL signaled from a BNC, it's just a Denkovi PCB broken out to panel mount connectors. Looks pretty though (on the outside).