Adjustable power supply (for a project box--not benchtop)

[semigy]

Does anyone know a good source for small adjustable power supplies? Ideally, the source should be adjustable by a reference voltage. Here are my needs:

Input voltage: 24V
Output voltage: 0-20V
Ouput current: 0-500mA
Output is bias voltage *2. I supply a 0-10V reference and get 0-20V out.
Efficiency: don't care
Cost: don't care

I'm sure I could build something up, but it would be nice if there was an exisiting solution that I could just buy.

 

[nicleo]

This links might give you some tips though it does not 100% match your requirement:




Hope it helps.