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Topic: Zener diode on voltage divider circuit (Read 2 times) previous topic - next topic



As an alternative to the 12V supply + Schottky clamping diode, you could go back to using 5V and about 1K2, and amplify the output use an op amp and 3 resistors. If you use a rail-to-rail output op amp, you can convert your thermistor output to swing over the whole 5V across the temperature range of interest, which gives you 0.1C resolution if the range is 0 to 100C.
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Thanks DC42; I'll give the 12v approach a go first of all, but yours is a good approach if I need more sensitivity.  Thanks


One of those devices will help;-


TVS (Transient-voltage-suppression diode) is my favor.

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