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What are open drains?

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Open drains are not a satisfactory technology for transporting sewage, even when the solids have been removed in some form of septic/interceptor tank (even sullage is likely to carry fecal contamination from laundry wastes, hand and body washing etc, but the concentrations are lower.) read more

Open-collector and -drain devices sink current when controlled to one state and have no current flow (i.e., output a high impedance state) in the other state. It is fairly common to use open-drains (open-collectors) together with a pull-up resistor. read more

Pseudo open drain. The pseudo open drain (POD) drivers have a strong pull-down strength but a weaker pullup strength. A pure open-drain driver, by comparison, has no pullup strength except for leakage current: all the pull-up action is on the external termination resistor. read more

Open drains (Including corrugated rubber or plastic sheets) drain fluid on to a gauze pad or into a stoma bag. They are likely to increase the risk of infection. Closed drains are formed by tubes draining into a bag or bottle. read more

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Open Drain - LGAM Knowledge Base
Source: lgam.info

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