Road Rage

[PhiloB]

Can I feed the Road Rage 12V and use the 18v out?
Or does it just accept 9v?

[madbean]

If the charge pump you are using will accept 12v then you should get about 23v or so out.

[PhiloB]

Thanks Brian.  Was thinking about building the GGG 4 isolated output power supply and including  a 12v output transformer but didn't want (2) 12v outs.  Also don't need a 23v output either.
Thanks again for quick response.

[jimilee]

Well, nobody needs 23v out, but dude!

[RobA]

Thanks Brian.  Was thinking about building the GGG 4 isolated output power supply and including  a 12v output transformer but didn't want (2) 12v outs.  Also don't need a 23v output either.
Thanks again for quick response.

If you use the LT1054, replace the 7815 voltage regulator with a 7818, and feed the RoadRage with 12V, the 15V output from the RoadRage will become an 18V output.

It'll be wasting a bit of power though because of the two linear regulators involved, so the total current available at that tap won't be the 80mA or so the LT1054 can source.