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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!
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