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Rapid turn-on, slow drop-out control arrangement
Rapid turn-on, slow drop-out control arrangement
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机译:快速开启,缓慢退出控制装置
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摘要
An electrical equipment controller is provided with a delayed turn-off capability. A thermostat is in series with a control relay. The thermostat is further in parallel with the series combination of a relay latch contact and a first positive temperature coefficient (PTC) device. A second PTC device is connected in parallel with the control relay. The arrangement of first and second PTC devices provides a predeterminable drop-out relay including compensation for ambient temperature changes.
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