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3 to 30v / 3a power supply

Velleman K7203: 3 to 30VDC/3A Power Supply

Velleman K7203

The Velleman K7203 30V/3A Adjustable Power Supply


Use the K7203 to power all of your common velleman kits with a stabilized direct current between 3 and 30 volts (consumption cannot exceed 3A). Or, use the kit as an adjustable power supply unit when you replece the trimmer with a pentiometer. You can use this kit for a variety of power supply needs as long as you adhere to the maximum specifications. Short circuit and overload protected.



  • Output voltage: adjustable from 3 to 30V, stabilized
  • Output current: max. 3A
  • Output ripple voltage: 0.5mV
  • Input voltage: 9 to 30V AC (depending on the desired output voltage)
  • Heatsink included
  • Transformer not supplied
  • Dimensions: 5.1 x 3.6 x 2"


Parts list
English assembly instructions through illustrations, pictures, etc.

Assembly instructions
Written multilingual manual explaining how to build the kit

Info Sheets

Resistor colour code

Overview of Velleman modules that are equal to D.I.Y Kits
This sheet is useful when you want to know which modules you could find in the do-it-yourself range of Velleman Kits and minikits.

Connection diagram & table for desired output voltage

 Warning: this product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov/product