VARIABLE POWER SUPPLY

(Kit - Soldering Required)

variable power supply using LM317 diy k68
 

Variable Power Supply Kit

A very basic power supply that can be adjusted over a range of about 1.5 to 30 volts DC @ 2 Amps. This is a text book circuit using an LM317, which is a 3 terminal regulator in a TO-220 package. Input can be either AC or DC; DC input must be at least 2.5 V above the required voltage output.  You can use a LM338T for up to 5 amps of current.  We do not have the LM338T, but you can get one at just about any component supplier - DIY Kit 68.

Specifications:

  • Dimensions: L: 2" W: 1-5/8" H: 7/8"
  • Input Voltage: AC or DC (32 Volts Max) has to be 2 volts above desired max output voltage.  Not intended for use with Line or Mains Voltage.
  • Outputs up to 30 VDC at 2 Amps.
  • Includes all parts and components.

See CK402.pdf for complete details, including schematic and theory of operation.  Requires Adobe Acrobat Reader available at www.adobe.com for FREE!

Note: This is a kit, you will receive parts to build the item pictured.  If you do not know how to solder you can check out our learn to solder kit. CK0402 - Variable Power Supply Kit - $18.95

Quantity and Educational discounts?

 

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