• Skip to main content
  • Skip to primary sidebar

Making Easy Circuits

Learn and build electronic circuits

You are here: Home / Power supply / How to Build a 0 to 50V, 0 to10amp Variable Dual Power Supply Circuit

How to Build a 0 to 50V, 0 to10amp Variable Dual Power Supply Circuit

Last Updated on August 25, 2018 by Admin 6 Comments

The submit describes a basic yet very helpful 0 to 50V dual power supply circuit which also contains a wide range current control feature starting from 0 to 10 amps.

dual2B02B50v2Bpower2Bsupply2Bcircuit
The basic design of the offered 0 to 50V variable dual power supply circuit with 0 to 10 amp variable current facility is demonstrated in the above figure.
The whole design is transistor (BJT) based and is practically unbreakable. Furthermore it's built with an over load and over current protection benefits.

The two section contained in the design are precisely comparable with their configurations, the only improvement being the utilization of PNP devices in the lower configuration while NPN in the upper configuration.
The upper NPN design is set up to generate a adjustable reply beginning with 0.6V to 50V positive while the lower PNP section turns into accountable of creating an oppositely the same reaction from -0.6V to -50V output.

The highest limit might be suitably transformed by simply altering the voltage rating of the transformer. In spite of this for higher voltages you might have to properly update the BJT voltage ratings appropriately.

In both the designs, P2 implements the function of varying the voltage levels as preferred by the user, while P1 features as the current regulator and is useful for changing or set up the output anywhere from 0 to 10 amp current. Here too the maximum rating depends upon the choice of the transformer amp rating and might be transformed according to personal preferences.

T1s in the both the sections turn out to be the basic part or the heart of the whole voltage control working in the circuit, which evolves into feasible as a result of the widely used common collector configuration of the devices. The other two active BJTs only assist to apply the same simply by managing the base power of the T1s thus rendering it easy to change the thresholds to any most wanted user described voltage and current levels, as per the ratings of the transformer or the input supply.

Parts list

Parts list

R1 = 1K, 5 watt wire wound

R2 = 120 Ohms,

R3 = 330 Ohms,

R4 = to be calculated using Ohms law, R = 0.6/Maximum Current Limit, Wattage = 0.6 x Maximum Current Limit

R5 = 1K5,

R6 = 5K6,

R7 = 56 Ohms,

R8 = 2K2,

P1,P2 = 2k5 presets

T1 = 2N6284 + 2N2222(NPN), 2N6286 + 2N2907(PNP)

T2, T3 = BC547B (NPN) BC557B (PNP),D1, D2, D3, D4 = 6A4,

D5 = 1N4007,C1, C2 = 10000uF/100V,

Tr1 = 0 – 40 Volts, 10 Amp

You'll also like:

  • 1.  +/-5V to 12V Adjustable Power Supply Circuit
  • 2.  High Current Voltage Regulator Circuit
  • 3.  How to Design an SMPS Circuit: Basic Instructions
  • 4.  Constant Current Circuit for High Watt LEDs
  • 5.  DC to DC Converter Circuit
  • 6.  Surge Protected Zero Crossing Transformerless Power Supply Circuits

About Admin

Hey friends, Thanks a bunch for stopping by this site! I am an engineer with a Bachelor of Engineering in Electronics and Telecommunication. One of my passions is gathering information from all sorts of electronics books and tutorials. I then take that information and compile it into a language that is super easy to understand. My goal is to make those complex electronics circuit concepts and technical terms much more accessible for all the new and budding electronics engineers out there. I can also design customized circuit diagrams as required by the users.
If you have any questions related to this field, please do not hesitate to drop a comment! I am always here and ready to help you out with any queries you might have. I cannot wait to hear from you!

Reader Interactions

Comments

  1. Spiros Giomataris says

    September 23, 2020 at 12:20 am

    under NI simulator 12.0 the circuit doesn’t work properly.The voltage adjust through the pot is either minimum or maximum and the part list confuses the reader!!

    Reply
    • admin says

      September 27, 2020 at 1:57 pm

      It is practically tested circuit so should work in real life

      Reply
  2. Roelof says

    August 16, 2018 at 11:08 pm

    Parts list??

    Reply
    • admin says

      August 24, 2018 at 7:27 pm

      hmm.. thanks, I’ll try to update it soon…

      Reply
      • Roelof van Heerden says

        August 24, 2018 at 8:12 pm

        Much obliged..love to join your personal site..

        Reply
        • admin says

          August 24, 2018 at 8:22 pm

          it’s my pleasure!

          Reply

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Primary Sidebar

Categories

  • 3 Phase (4)
  • 8051 Microcontroller (1)
  • Arduino (11)
  • Audio and Amplifier (102)
  • Automation (8)
  • Battery Chargers (64)
  • Bicycle Projects (4)
  • Car and Motorcycle Projects (39)
  • Datasheets (10)
  • DIY Projects (5)
  • Electrical (15)
  • Free Energy (6)
  • Games Projects (2)
  • High Voltage (14)
  • Hobby Projects (30)
  • Household Circuits (2)
  • IC 555 Circuits (5)
  • Ignition Circuits (2)
  • Indicators (50)
  • Infrared (6)
  • Inverter Circuits (29)
  • Lights and Lamps (97)
  • Medical (8)
  • Meter and Tester Circuits (38)
  • Motor Driver (17)
  • New Circuits (56)
  • Oscillators (30)
  • Pets and Pests (5)
  • Power supply (80)
  • Protection Circuits (25)
  • PWM (9)
  • Remote Control (20)
  • Security and Alarm Circuit (48)
  • Sensors and Detectors (66)
  • Signal Processor (23)
  • Solar Controller Circuits (62)
  • SSR (3)
  • Temperature Controller (20)
  • Timer (25)
  • Transformerless (7)
  • Transmitters (12)
  • Tutorials (45)
  • UPS (2)
  • Voltage Regulators (57)
  • Water Sensor and Controller (29)
  • Home
  • Privacy Policy
  • Contact
  • Disclaimer
  • Copyright

© 2025 · Making Easy Circuits