> The input signal is 20v peak-to-peak (-10v to +10v)  ac 14Mhz 
> rf signal.
> and i want to shift it to ( -15v to +5v ).  I looking for a 
> way to do it 
> without using additional power supply.

a suitable transformer, with the 0 of the secondaryt at -5V?

Wouter van Ooijen

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Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu
 

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