Introduction: Build Your Own Variable Lab Bench Power Supply
In this project I will show you how I combined a LTC3780, which is a powerful 130W Step Up/Step Down converter, with a 12V 5A power supply to create an adjustable lab bench power supply (0.8V-29.4V || 0.3A-6A). The performance is quite good in comparison with other models which cost around the same. Let's get started !
Step 1: Watch the Video !
The video gives you all the information you need to build this correctly. But I will also present you a parts list and more pictures for convenience.
Step 2: Order Your Parts !
Here is the parts list with example sellers (affiliate links):
Ebay:
1x LTC 3780: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...
1x 12V 5A Power Supply: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...
1x AC Input: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...
1x AC Switch: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...
1x Voltage/Current Display: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...
2x Binding post: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...
1x 200kΩ Potentiometer: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...
1x 500kΩ Potentiometer: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...
2x Knobs: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...
Aliexpress:
1x LTC 3780: https://s.click.aliexpress.com/e/_dUULcjH
1x 12V 5A Power Supply: https://s.click.aliexpress.com/e/_d6OKO63
1x AC Input: https://s.click.aliexpress.com/e/_d6rs11H
1x AC Switch: https://s.click.aliexpress.com/e/_d8ahMCn
1x Voltage/Current Display: https://s.click.aliexpress.com/e/_dTLhigJ
2x Binding post: https://s.click.aliexpress.com/e/_dTyymFV
1x 200kΩ Potentiometer: https://s.click.aliexpress.com/e/_d6mRdPZ
1x 500kΩ Potentiometer: https://s.click.aliexpress.com/e/_d6mRdPZ
Amazon.de:
1x LTC 3780: -
1x 12V 5A Power Supply: http://amzn.to/1FIc4vK
1x AC Input: http://amzn.to/1FIc7b5
1x AC Switch: http://amzn.to/1FIceDs
1x Voltage/Current Display: http://amzn.to/1AwUnt8
2x Binding post: http://amzn.to/1ENKLzo
1x 200kΩ Potentiometer: http://amzn.to/1ENKQmP
1x 500kΩ Potentiometer: http://amzn.to/1AwUEfD
2x Knobs: http://amzn.to/1FIcuCC
Amazon.co.uk:
1x LTC 3780: -
1x 12V 5A Power Supply: http://amzn.to/1FId7fh
1x AC Input: http://amzn.to/1R1lRl9
1x AC Switch: http://amzn.to/1AwWsoT
1x Voltage/Current Display: http://amzn.to/1AwWFsa
2x Binding post: http://amzn.to/1ENM3uh
1x 200kΩ Potentiometer: http://amzn.to/1FIdAyb
1x 500kΩ Potentiometer: http://amzn.to/1FIdBSx
2x Knobs: http://amzn.to/1AwXvoY
Step 3: Build It !
Here are some picture which should hopefully help you to build your own supply. And be careful when working with mains voltage !
Step 4: Success !
You did it! Now you have successfully built your own variable lab bench power supply!
Feel free to check out my Youtube channel for more awesome projects:
http://www.youtube.com/user/greatscottlab
You can also follow me on Facebook, Twitter and Google+ for news about upcoming projects and behind the scenes information: