Jump to content
Electronics-Lab.com Community

Recommended Posts

 

Features:

  • AC – DC Conversion
  • Double output voltages (Positive – Ground – Negative)
  • Adjustable positive and negative rails
  • Just a Single-Output AC transformer
  • Output noise (20MHz-BWL, no load): Around 1.12mVpp 
  • Low noise and stable outputs (ideal to power Opamps)
  • Output Voltage: +/-1.25V to +/-25V 
  • Maximum output current: 300mA to 500mA 
  • Cheap and easy to solder (all component packages are DIP)

 

A double output low noise power supply is an essential tool for any electronics enthusiast. There are many circumstances that a double-output power supply is necessary such as designing pre-amplifiers and powering OPAMPs. In this article, we are going to build a linear power supply that a user can adjust its positive and negative rails independently. Moreover, just an ordinary single-output AC transformer is used at the input.

 

References

Source: https://www.pcbway.com/blog/technology/Low_Noise_Adjustable_Linear_AC_DC_Power_Supply.html

[1] LM317 Datasheet: http://www.ti.com/lit/ds/slvs044x/slvs044x.pdf

[2] LM337 Datasheet: http://www.ti.com/lit/ds/symlink/lm137.pdf

[3]: Schematic Symbol and PCB Footprint for LM317: https://componentsearchengine.com/part.php?partID=248007

[4]: Schematic Symbol and PCB Footprint for LM337: https://componentsearchengine.com/part.php?partID=290650

[5]: Altium Plugin: https://www.samacsys.com/altium-designer-library-instructions

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

×
  • Create New...