FAHRENHEIT CENTIG RADE LED THERMOMETER

  
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National LX5700 temperature transducer provides input for code conversion circuit driving 3-digit LED display indicating temperature range from -40ƒ to +100ƒ or -40 °F to +199 °F under control of ganged switch. -`Linear Applications , Vol. 2, ` National Semiconductor, Santa Clara CA. 1976, LB-30.
FAHRENHEIT CENTIG RADE LED THERMOMETER - schematic




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