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 

 

 

 

13 Comments

  1. Eltecnico October 22, 2012
  2. DANIEL December 17, 2012
  3. Daniel December 20, 2012
  4. Daniel December 20, 2012
  5. john March 21, 2013
  6. Mensajero Poderoso June 12, 2013
  7. zaenal electronic December 14, 2013
  8. SEYED REZA ROODASHTY February 10, 2014
  9. arvind dhakre June 17, 2014
  10. mahmood kordi February 15, 2015
  11. amir August 17, 2015
  12. jean August 19, 2015
  13. jitender sharma September 13, 2015

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