0-30 Volt Laboratory Power Supply


Posted on Jul 19, 2012

With reference to the schematic, lamp, LP2, is a power-on indicator. The other lamp (lower) lights when the unit reaches its preset current limit. R5, C2, and Q10 (TO-3 case) operate as a capacitor multiplier. The 36 volt zener across C2 limits the maximum supply voltage to the op-amps supply pins. D5, C4, C5, R15, and R16 provide a small amount of negative supply for the op-amps so that the op-amps can operate down to zero volts at the output pins (pins 6). A more modern design might eliminate these 4 components and use a CMOS rail-to-rail op-amp.


0-30 Volt Laboratory Power Supply
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Solid state stepping switch
    Logic probe yields three discrete states
    TA8210AH - 2 x 22W BTL Car Amplifier Circuit
    Nokia 5800 Ringtone Buzzer Audio IHF Speaker Repair
    Reverse engineering the Elco heating protocol
    Restoration of a Yamaha A-760 vintage integrated amplifier
    Basics of Thyristors
    Small Stepper Motor
    5G169 holiday lights integrated circuit



    Top