0-50V 2A Bench power supply

• 0-50V 2A Bench power supply

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    I use the lm10 IC because it has a reference voltage and thats useful for dc power supply. With two ICs can take different output voltage and amperage. This circuit is protected from short circuit.P2 is for controlling the current at the range of 0-2A. Stabilize the output voltage with R4 on negative pin on op-amp and with R2 & P1 on positive pin.

    Op-amp output controls T1 that not let ripple of voltage.T1 increase or decrease ampere of R6 and control the voltage of T5 & T4. Pin 1 is the reference voltage and reference voltage is losing some voltage on R1 that has 100uA . This current passes through P1 too.

    Vlose p1=100uA*Rp1

    This lose voltage regulate output voltage rate of output current is compare between reference voltage of P3 and lose voltage on R11.T3 is protecting short circuit with R11. For reduce out put voltage to 0v should parallel one resistor 470 ohm in out put. Minimum voltage is 0.4v. The maximum output voltage is fixed with R1b and should not become over of 50v. Therefore your transformer should give 36V, 3A with 4700uF capacitor. T6, T5, T7 need heatsilk.
    
    
    

    

    
    

    R1a = 2,2 K
     R1b = read the text
     R2 = 10 K
     R3, R7 = 3.3 k
     R4 = 390 Ohm
     R5 = 47 K
     R6 = 3.3 K 1Watt
     R8 = 180 Ohm
     R9, R10 = 0.47 Ohm 3Watt
     R11 = 0.075 Ohm 2Watt
     R12 = 470 Ohm
     P1 = 500K liner potentiometer
     P2 = 4.7 K potentiometer
     P3 = 10 K potentiometer
     C1 = 1nF
     C2 = 10nF
     C3 = 22nF
     C4 = 47mF 63v electrolytic
     C5 = 4700mF 80v electrolytic
     T1, T2 = BC161
     T3, T4 = BD141
     T5 = BD241
     T6, T7 = 2V3055
     D1, D2 = 1N4148
     D3, D4 = 1N4001
     IC1, IC2 = LM10C

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