Celsius to Farenheit temperature converter

Converts temperature degrees C to F Alter the top left source in mV which represents the sensor as C, then view F next to it. NB: This is a C/F conversion setup only. It does not configure the sensor. There are many formula variations which convert °C to °F or vice versa. An easy one to remember is : add 40, multiply by 9/5 (ie: multiply by 1.8), subtract 40 ... that is C to F If you are wanting °F to °C, then multiply by 5/9 (ie: by 0.5556) in the above formula instead of the 9/5 Remember which way round to multiply... F reads fatter ie larger. Here in the schematic is that sequence: Left top opamp is summing 40 to the adjustable C temp source there (which is set to °C=10 mV default here). Right top opamp multiplies the result by 1.8 Bottom opamp subtracts 40 There are other ways using just a single opamp, .... the demonstration here shows each action on its own. Alter the top left source in mV which represents the sensor as C, then view F next to it. eg: °C °F 0 32 ... freezing water 10 50 16 61 28 82 ... hot day 100 212 ... boiling water Values are approx. Final result can be converted from - to + with a little more effort in the schematic. The final mV output can then also be further amplified as reqd. Very bottom resistor can be gently adjusted to alter/calibrate the final result if reqd. Here is a full F to C and vice versa version: http://everycircuit.com/circuit/5362322511233024 And yet a different variation here:  http://everycircuit.com/circuit/5785433417187328

published 7 years ago