> and what would that change?
Suitability for purpose. Some obvious ones:
Defined and validated environmentals (temperature, voltage, and in this case pressure).
Qualified components — capacitors chosen for lifetime rather than shaving a cent, perhaps avoidance of MEMS oscillators with helium sensitivity.
Failure analysis. Low and understood probability of fail-unsafe conditions (short circuit), mitigation for those risks, fume-proof and fire-proof PCB materials to protect the sealed environment in case of failure.
Redundancy to handle failures anyway. Multiple independent strings so that single-point failure lead to partial loss of lighting, not all of it.
Load ahedding, eg dropping all but one string at a known voltage above minimum voltage, to save power for other more critical loads during system failure scenarios.
Suitability for purpose. Some obvious ones:
Defined and validated environmentals (temperature, voltage, and in this case pressure).
Qualified components — capacitors chosen for lifetime rather than shaving a cent, perhaps avoidance of MEMS oscillators with helium sensitivity.
Failure analysis. Low and understood probability of fail-unsafe conditions (short circuit), mitigation for those risks, fume-proof and fire-proof PCB materials to protect the sealed environment in case of failure.
Redundancy to handle failures anyway. Multiple independent strings so that single-point failure lead to partial loss of lighting, not all of it.
Load ahedding, eg dropping all but one string at a known voltage above minimum voltage, to save power for other more critical loads during system failure scenarios.