0-30V 5A variable benchtop power supply using LM723,CA3140,2N3055

This is 0-30V 5A variable benchtop power supply circuit,Output voltage 0-30V and Current 5A max. Use IC LM723 is a voltage regulator designed primarily for series regulator applications. By itself, it will supply output currents up to 150 mA I so use Transistor 2N3055 X 2 for Booster current to 5A. IC CA3140 for Control Current and Voltage.
– P1-50K for control current.
– R20-50K for Adjustable voltage output.
– R19-5K for fine Adjustable voltage output.
– Transformer use 5-8A, Voltage see in circuit.circuit_of_ 0-30V 5A variable benchtop power supply using LM723,CA3140,2N3055

– Detail more see circuit

 

PCB Variable Regulator 0-30V 5A by LM723,CA3140,2N3055
PCB Variable Regulator 0-30V 5A

Parts you will needs
IC1…..UA723
IC2…..CA3140
Q1,Q2…..2N3055
Q3………BC337
Q4………BC337
R1,R3………1.2 ohms  5W  5%  resistors
R4……… 100 ohms   5W  5%  resistors
R5,R7………100K….0.5W  5%  resistors
R6…….. 2.2K   5W  5%  resistors
R9,R10……. 1K….0.5W  5%  resistors
R8…….100 ohms ….1W  5%  resistors
R9,R10……. 1K….0.5W  5%  resistors
R11………… 150 ohms  0.5W 5%  resistors
R12………… 5.6K  0.5W 5%  resistors
R18………… 3.9K  0.5W 5%  resistors 
R16………… 47K  0.5W 5%  resistors
R13………… 1.5 ohms  0.5W 5%  resistors 

14 Comments

  1. amir August 17, 2015
  2. jean August 19, 2015
  3. jitender sharma September 13, 2015
  4. ISSL September 30, 2016

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