This is a simple Temperature To Frequency Converter Circuit Diagram. enables the circuit to be used as a reliable temperature-to- frequency converter; in combination with the fixed reference output of 1.00 V, offset scales. This In this circuit an LM34 or LM35 produces a frequency proportional to temperature. Reference current (138 ) is set via R3. The output can be used to drive a display, frequency counter, or other indicating device for temperature readout.
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