: Surveillance storage systems (DVRs/NVRs).
Access to these schematics is generally restricted to authorized service technicians or specific enterprise partners. ds80249 p rev 12 schematic exclusive
For specific ICs or voltage regulators found on the Rev 12 board. : Surveillance storage systems (DVRs/NVRs)
The standard schematic shows a simple LC filter on the 28V output. The schematic includes an additional series notch filter tuned to 120kHz. This was added to suppress the 5th harmonic of the switching frequency, which was causing interference with IFF (Identification Friend or Foe) transponders in F-16 avionics bays. The standard schematic shows a simple LC filter
For the power supply engineer, the represents the final, optimized state of a mature military converter. Its dual-edge modulation, exclusive notch filter, and triple-redundant feedback loops solve the specific reliability failures of earlier revisions.
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