Yes, it's possible. You need a boost switched converter. Like this one:
http://www.national.com/ds.cgi/LM/LM1577.pdf
National has design software available to help figure out how to use their parts.
Other manufacturers (Linear Technology, etc.) would have similar devices.
This will be noisier than a linear power supply, and may be tricky to build.
http://www.national.com/ds.cgi/LM/LM1577.pdf
National has design software available to help figure out how to use their parts.
Other manufacturers (Linear Technology, etc.) would have similar devices.
This will be noisier than a linear power supply, and may be tricky to build.
Or, change the rectifier system:
If it's half-wave: change to bridge, change the cap to correct voltage.
If it's bridge: change to voltage doubler, add second cap.
The above assumes it's an unregulated supply.
Voltage doubler circuits have poorer regulation, which may be an issue.
It's easier to go and buy a new one, but you can learn nore by trying
If it's half-wave: change to bridge, change the cap to correct voltage.
If it's bridge: change to voltage doubler, add second cap.
The above assumes it's an unregulated supply.
Voltage doubler circuits have poorer regulation, which may be an issue.
It's easier to go and buy a new one, but you can learn nore by trying
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