Precision buffered reference


Posted on Dec 21, 2012

The circuit will provide 3 preset currents which will remain constant despite variations of ambient temperature or line voltage. ZDl produces-a temperature stable reference voltage which is applied to the noninverting input of ICl. 100% feedback is applied from the output to the inverting input holding the voltage at Q2s emitter at the same potential as the noninverting input. The current flowing into the load therefore is defined solely by the resistor selected by Si


Precision buffered reference
Click here to download the full size of the above Circuit.

With the values employed here, a preset current of 10 mA, 100 mA or 1 A can be selected. Q2 should be mounted on a suitable heats ink.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    SCA decoder
    Voltage-to-frequency-converter
    DC Motor Control Circuit
    Circuit for ultrasonic threshold detection
    Low Power Voltage Doubler
    emergency light circuit diagram
    TRANSISTOR MOTOR CONTROLLER
    Digital Combination LockCircuit Project Tutorial
    Current Limiter - Support Material
    Using OP37 preamp



    Top