Designing an Adjustable Voltage Regulator Without an IC: Tips and Resources?

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SUMMARY

The discussion focuses on designing an adjustable voltage regulator without using an integrated circuit (IC). The input voltage range is specified as 10-15 volts, with an adjustable output between 4-6 volts and a requirement for line and load regulation of around 1%. A recommended starting point is to reference the equivalent circuit of the LM317 adjustable linear voltage regulator, which can serve as a guide for constructing a similar circuit using discrete components such as transistors.

PREREQUISITES
  • Understanding of linear voltage regulator principles
  • Familiarity with discrete transistor circuits
  • Knowledge of voltage regulation techniques
  • Ability to read and interpret datasheets, specifically for LM317
NEXT STEPS
  • Research the equivalent circuit of the LM317 adjustable linear voltage regulator
  • Explore transistor configurations for voltage regulation
  • Study load and line regulation techniques in detail
  • Investigate alternative adjustable voltage regulator designs using discrete components
USEFUL FOR

Electronics enthusiasts, hobbyists designing power supplies, and engineers looking to implement adjustable voltage regulation without integrated circuits will benefit from this discussion.

arabul
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Hi Everyone,

I need to design an adjustable voltage regulator without using an IC. Does anybody could give me a source that can help me?

Input will vary between 10-15 volts... And output will be adjustable between 4-6 volts.
Line and Load regulations must be around %1

Need your help...
 
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arabul said:
Hi Everyone,

I need to design an adjustable voltage regulator without using an IC. Does anybody could give me a source that can help me?

Input will vary between 10-15 volts... And output will be adjustable between 4-6 volts.
Line and Load regulations must be around %1

Need your help...

Homework Statement





Homework Equations






The Attempt at a Solution


Welcome to the PF. The easiest way to start would be to look at the equivalent circuit in the LM317 datasheet. That will show you how that adjustable linear voltage regulator IC is put together, and you can do something similar using discrete transistors, etc.
 

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