265V PS Needed For Braille Display

Harald Klein writes: "We are developing a cheap braille display for visually impaired people. A big problem is the power supply for the piezo elements. They need 265V DC, 0.5 mA max. The logic needs 5V DC, 15 mA. It is absolutely necessary to provide logic power before providing the high voltage. Even so the high voltage should be removed before logic power and signals. Any power supplies in mind that meet the specs?"