linearizing circuit for thermocouples


Posted on Feb 7, 2014

This circuit changes the gain of opamp U1B in four steps or segments. It can be used to get a linear output from most transducers to 1% levels. U1A is a amplifying buffer use it to boost the signal to the required level. The resistor values i have put are for an imaginary transducer, you have to design them. The buffered input signal is compared to


linearizing circuit for thermocouples
Click here to download the full size of the above Circuit.

reference switching points by LM339. LM339 changes the gain resistors of U1B thru the mux switch 4066. JP1 to JP4 can select either amplification or attenuation of signal. The resistor switched by 4066 can be across R1 or R2 based on JP1 to JP4.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Controlling circuit of the touch control screen make short biography
    Device Switching Using Password
    safe and security system
    Electronic Multimeters
    non inverting opamp butterworth filter
    HHO generator power supply
    Installation of IFD in Kenwood TM455
    Ensemble II VHF RX
    Dedicated headphone amplifier integrated amplifier LM4880-02



    Top