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Humidity and Solar Energy Measurement

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Low-cost relative-humidity transmitter uses single logic IC

Low-cost relative-humidity transmitter uses single logic IC

This low-cost percentage-relative-humidity radio transmitter operates in a cold-storage warehouse for vegetable storage at temperatures of 1 to 5°C.

http://www.edn.com/article/CA179579.html

Measure humidity and temperature on one TTL line

Measure humidity and temperature on one TTL line

By combining the responses of an Analog Devices AD590 temperature sensor and a Humirel HS1101 humidity sensor, you can generate single TTL-level signal containing information from both sensors

http://www.edn.com/article/CA152878.html

Transmitter senses triple relative-humidity figures

Transmitter senses triple relative-humidity figures

This circuit is a triple, relative-humidity sensor and radio transmitter.

http://www.edn.com/article/CA244148.html

Signal conditioning precisely indicates humidity

Signal conditioning precisely indicates humidity

translates the level of humidity from 0 to 100% into a stable, respective dc signal of 0 to 100 mV

http://www.edn.com/archives/1998/020298/03di_03.htm