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DIY Hobby projects, diagram, schematic

Low Ripple Power Supply Circuit Diagram

electronicecircuits, February 20, 2011August 21, 2023
Low Ripple Power Supply Circuit

Low Ripple Regulated Power Supply Circuit Diagram

This circuit may be used where a high current is required with a low ripple voltage (such as in a high powered class AB amplifier when high quality reproduction is necessary ).

Low Ripple Power Supply Circuit Diagram

PARTS LIST
R12.2KΩ 1W
R256Ω 1W
R31oKΩ 1W
C11000µF 63V
C2100µF 50V
C3470µF 50V
D1, D2, D3, D46A Bridge Rectifier
D5500mA Zener Diode (see description)
Q12N3055
Q22N3054

Q1, Q2, and R2 may be regarded as a power darlington transistor. D5 and R1 provide a reference voltage at the base of Q1. D5 should be chosen thus:
D5=Vout-1.2

C2 can be chosen for the degree of smoothness as its value is effectively multiplied by the combined gains of Q1/Q2, if 100µF is chosen for C2, assuming minimum hef for Q1 and Q2,

C=100×15(Q1)×25(Q2)

=37000µF.

transistor amplifier  low ripple power supplyclass ab power amplifier low ripple power supplyLow Ripple Power Supply Circuit

Please send your ideas, which are very important for our success…

Electronic Circuits Power AmplifierPower Supply

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Comments (5)

  1. ranjan kumar banik says:
    March 6, 2011 at 11:12 pm

    pls give me full diagream and write some details by that circuits and give it free or trayel varson.
    thank u

    Reply
  2. Mike says:
    May 20, 2011 at 3:27 pm

    does it works @ 24v power supply?

    Reply
  3. krishna says:
    September 28, 2012 at 11:35 am

    please gv information of bridge rectifier diodes

    Reply
  4. usman says:
    September 15, 2013 at 2:41 am

    a transformer that converts 220v Ac to 12v Ac then rectifying circuit and then all the above elements , but the output voltage gets around 1.98v – 2v (tried every possible value for zener) , but if i do not use the transfomer part then i get 220v Ac to bridge ,which obviously would cause me to need power diodes of huge ratings and thus having a huge size ,(leaving heat losses and other things apart)… please let me know if u can help me get 12-30v Dc with input of around 12v 2A

    i would like to attach the simulink file here but i dont know how to..

    will wait for your reply
    thanks

    Reply
  5. Radu Marin says:
    May 19, 2015 at 10:06 pm

    It’s very good to supply an power amplifier, because the capacitor it have high voltage.

    Reply

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