Home >> Hobbies >> Other Hobbies

How to Get More Voltage on a Flyback Converter

A flyback converter is a low-power DC-to-DC converter, which uses a switching device, rectification circuit and isolation transformer to step up DC voltage. The output voltage is primarily a function of the turns ratio of the power transformer. To increase the output voltage, replace the existing transformer with a new transformer that has a higher turns ratio than the existing one. For example, if the existing transformer has 100 turns on the primary side and 200 turns on its secondary side, the output voltage could be raised by using a transformer with a 100 turn primary and a 300 turn secondary.

Things You'll Need

Transformer
Electrical wire
Wire cutters
Wire strippers
Capacitors

Instructions

- 1
  Disconnect the DC power source from the flyback converter. Use the screwdriver to remove the flyback converter housing. Locate the power transformer inside the flyback converter. Disconnect the two primary wires that feed the transformer and the two secondary wires of the transformer. Make note of which transformer terminal each wire is connected.
- 2
  Remove the mounting screws of the transformer and pull the transformer out. Replace this transformer with a new transformer with a higher output voltage. Mount the new transformer into the old transformer's location.
- 3
  Reconnect the wires to the transformer based on the notes you took on step one. Check to make sure that the output capacitors of the flyback converter are rated to handle the new output voltage. These capacitors should have a greater rated voltage than the new output voltage of the flyback converter. If not, these capacitors will have to be replaced with larger ones. Once this is complete, reconnect the DC power source and test the flyback converter.

Other Hobbies